2. Explain the factors that led Wilson to the idea of (a) studying small islets, (b) fumigating them, and (c) observing the recolonization of species.

Answers

Answer 1

Answer and Explanation:

The ecologists MacArthur and Wilson took the term island biogeography theory to refer to the predictions about the number of species that could be inhabiting on an island.  

Island biogeography theory establishes that the two factors that affect species richness in natural communities on an island are the distance from the mainland and the size of the island.  

At the same time, these factors affect inmigration and extinction rates. According to the theory, islands that are closer to the continent have higher possibilities of receiving immigrants than those islands that are located farther from the mainland. This is the effect of distance.  

The effect of size is reflected in the relation between island size and species diversity. In smaller islands, the probability of extinction is higher than in bigger islands. Bigger islands can have more species than smaller ones.  

In the case of two islands of the same size and different distance to the mainland, both of them will have the same extinction rate, but the one closer to the continent will have a higher immigration rate, and so, a higher amount of species. The S value will be higher on the island closer to the continent.

Experiment:

To prove that the observations about the species richness and its relation to island size and distance to the continent were not a casualty, manipulation experiments were developed. These experiments helped to prove how the colonization process take place from cero. To observe the entire process of ecological succession and the tendencies proposed by the island biogeography theory Wilson and Simberloff (1970) eliminated the fauna on some islands to observe how they were recolonized from the continent. They fumigated the mangler island and studied these islands to account for the variation in arthropod richness over time. They studied many islands classified by distance. On each island, the richness increased at different rates.  The island closest to the continent received more immigrants and is colonized faster than the other ones, reaching its original richness faster. The farthest island was recolonized but at a much lower rate and it does not reach equilibrium while the study was going on. Although, it was expected to reach equilibrium with time.  


Related Questions

What is the function of the nucleus? A. Builds proteins B. Stores the cell's glucose C. Stores the cell's DNA D. Produces energy for the cell by respiration

Answers

Appropriate Answer:

[tex] \large{ \boxed{ \bf{ \pink{Stores \: the \: cell \: DNA(C)}}}}[/tex]

Nucleus is the control centre of the cell and manages all the cellular activities taking place inside the cell. It consists of four parts :-

Nuclear membrane, Nucleoplasm, Chromatin material and Nucleolus.

The Chromatin material(Condensed - Chromosome) stores the cell's DNA which is transmitted to next generation.

C, Stores the cells DNA

Which type of chromosomal disorders seems to have the greatest affect on a person’s health—disorders involving autosomes or sex chromosomes? Why do you think this might be the case? thanks in advance

Answers

Answer:

Disorders involving sex chromosomes.

we can take Turner's syndrome n klinefelter's syndrome as examples.

Scientists are able to reproduce certain plants and animals by cloning them in laboratories. The diagram shows the steps of cloning using tissue cultures. Do you think cloning is a form of asexual reproduction? Explain your answer using evidence from the diagram

Answers

Answer:

Yes.

Explanation:

Yes, cloning is a form of asexual reproduction because there is no fusion of sperm and eggs takes place. the animal which is formed from this process is identical of that organism because it is produced from the tissue of that single animal. in 1996, first mammal is produced from cloning was sheep named dolly at the Roslin Institute in Scotland. In cloning, the egg is taken from female organism and remove the nucleus from the egg then the desired organism cell is taken and fuse with the nucleus with the help of electricity. Then implant this embryo in the body of first organism from where egg is taken and after that the embryo turns into a baby, this process is called cloning.

Answer:

Yes, cloning is a form of asexual reproduction. The diagram shows that new plants form from a single parent plant, which means that the offspring are genetically identical to the parent.

Explanation:

Edmentum

You find a new organism and are trying to determine what how it eats. You found it in a mud flat at the ocean and it has no teeth, but a very long alimentary canal. You see living examples moving through the mud very slowly. Based on all of this, you conclude that this animals is

Answers

Answer:

A Detritivore

Explanation:

A Detritivore is a heterotrophic organism that feeds on dead plant and animal materials. They could also feed through coprophagy which is nutrition obtained by feeding on feces. Worms that dwell on the soil, insects, and mollusks are examples of detritivores. Detritivores can also be found residing in aquatic environments. Crabs and Lobsters are examples of these organisms.

Detritivores have no teeth. So, they tend to suck in their food, and this food, through peristaltic actions, moves directly into the digestive tract where it is acted upon by digestive enzymes. From the observations, I made about the organism at the mudflat at the ocean, I can conclude that it is a detritivore.

what are top consumer​

Answers

Answer:

it is a food chain.

I can't write more it's not allowed

Humans are at the top of the food chain which makes up primary consumers

what is biology definition in details

Answers

Answer:

Biology :

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the study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy, behaviour, origin, and distribution.

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#Be Brainly

Answer:

The word biology is derived from the greek words /bios/ meaning /life/ and /logos/ meaning /study/ and is defined as the science of life and living organisms. An organism is a living entity consisting of one cell e.g. bacteria, or several cells e.g. animals, plants and fungi.

Hope this helps! :D

If a cell has 24 pairs of chromosomes in its diploid state, how many
chromosomes will it have after Meiosis 2?
A. 12
B. 24
C.48
D. 6

Answers

Answer:

option A is correct that is 12

Explanation:

meiosis occur in two phases in first phase DNA replication occur and amount of DNA become doubled without any change in the chromosome number and two daughter cell (each 2 n)are formed.

now in stage 2 each daughter cell undergoes mitosis with the formation of two cells with half chromosomes(n)

now 2n=24

n=24/2 =12

after meiosis stage 1...........two daughter cell each with  24 chromosomes

stage 2 .............each daughter cell form two grand daughter cell each with 12 chromosomes

net result.......4 daughter cell each with 12  chromosome(assuming cell as a diploid cell)

If a cell has 24 chromosomes before cell division then the daughter cell resulting from the mitotic division will have 24 chromosomes while the daughter cell resulting from the meiotic division will contain 12 chromosomes each.

The answer is option A.

What are meiotic and mitotic cell divisions?

There are sorts of cell departments: mitosis and meiosis. most of the time whilst humans discuss “cellular division,” they suggest mitosis, the procedure of making new frame cells. Meiosis is the sort of cell division that creates egg and sperm cells. Mitosis is an essential technique for lifestyles.

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what new stuff can you think of that scientists have made?

Answers

Answer:

Hey there!

Recently, scientists have discovered many things. Some include: A new ink to detect fake passports, world's largest supercomputer, hyperloop technology, and even a potential vaccine for diarrhea.

Let me know if this helps :)

is the world safe place for animals and plants?




Guys pls answer it ​

Answers

Answer:

No it isn't

Explanation:

Nothing is ever safe everything is constantly trying to kill you and the same goes for animals. Wether it be humans or other animals and even their own bodies.

Answer:

Wildlife sanctuary is the place where wild animals are protected in their natural habitat. Here poaching or capturing the animals is prohibited. Biosphere reserves are the area used to conserve biodiversity like plants, animals and microorganisms. It contains many wildlife sanctuaries and national parks.

Explanation:

3. Which plants are usually the first to grow during secondary succession?
A ferns
Blichens
Cweeds
D trees

Answers

Answer:

ferns

Explanation:

these are alsi known as conifers which require a great amount if light

Im not a science student just trying beans I guess

Which amino acid chain will be formed by the condons shown below?

Answers

Answer:

D. Gly Lys Cys

Explanation:

choose one plant or animal and what are the 3 adaptions this organisms has

Answers

The three basic types of adaptations, based on how the genetic changes are expressed, are structural, physiological and behavioral adaptations. Most organisms have combinations of all these types.

Match each statement to the type of behavior it describes. Jenna published the results of her latest experiment for the public to see. Malcolm altered an experiment to be able reach his desired conclusion. Elena keeps complete records of all her experiment results. Neal shared the results of his field study even though they didn’t support his hypothesis.

Answers

Answer:

See the answer below

Explanation:

It may seem that the question is incomplete. The complete question reads:

Match each statement to the type of behavior it describes. Jenna published the results of her latest experiment for the public to see. Malcolm altered an experiment to be able reach his desired conclusion. Elena keeps complete records of all her experiment results. Neal shared the results of his field study even though they didn’t support his hypothesis. Put each description to the group it belongs to. 1.Responsible 2.Irresponsible.

To answer the question:

Responsible behavior

Jenna published the results of her latest experiment for the public to see.Elena keeps complete records of all her experiment results.Neal shared the results of his field study even though they didn't support his hypothesis.

Irresponsible behavior

Malcolm altered an experiment to be able to reach his desired conclusion

Responsible behaviors are those that support responsible scientific practices and do not jeopardize the objective nature of research. Every data during experiments must be well kept and after thorough analysis, results must be published fro the public to see irrespective of whether it agrees or disagrees with the original hypothesis.

Altering an experiment in order to achieve the desired result is grossly irresponsible, as this eliminates the objectivity that should be the main goal of every experiment. Bias must be eliminated from every scientific experiment.

The scientist has chosen to study the motion of clouds in the atmosphere during a thunderstorm which type of model is most appropriate for her investigation

Answers

Answer: COMPUTER SIMULATION

Explanation: Computer simulation is a model that helps to scientists to have a clear and better understanding and be able to effectively predict the occurrence of future outcomes of real physical situations.

Computer simulation makes use of mathematical models to effectively analyse and predict future occurrences which helps the world to be better prepared and able to effectively manage physical and real world situations.

Only ------ percent of the food eaten is turned into its own body. ​

Answers

Answer:

10%

Explanation:

there is a the rule that only 10% of the energy is transferred from one trophic level to the other.

this means that only 10% of the food an organism eats  is passed onto the next organism. eg only 10% of the energy in a plant is transferred to a rabbit that eats the plant. After that if  a wolf eats the rabbit only 10% of the energy of food will pass on to the wolf.

Which of the following is composed of a population of a species plus populations of other species? A. Community B. Biotic Potential C. Abiotic community D. Ecosystem

Answers

A Community is composed of a population of a species plus populations of other species. Thus, the correct option is A.

What is Population?

A Population may be defined as a group of individuals belonging to the same species living in the same area at a given time. Some demographic characteristics of a population are size, density, birth rate, death rate, population dispersal, etc.

A community may be defined as a group of individuals belonging to different species living in the same area at a given time.

An ecosystem may be defined as a place or area where individuals of different species along with abiotic factors live together and interact with one another for the purpose of food, shelter, and space.

The Abiotic community deals with the existence of abiotic factors like temperature, rainfall, fire, winds, mountains, hills, etc.

Therefore, a Community is composed of a population of a species plus populations of other species. Thus, the correct option is A.

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Match each hormone to its function
•luteinizing hormone
•testosterone
•oxytocin
•follicle-stimulating hormone
•estrogen
•gonadotropin-releasing hormone

Answers

Answer: Stimulates the contraction of the uterus during childbirth - OXYTOCIN

Stimulates sperm production and growth of ovarian follicles - FOLLICLE STIMULATING HORMONE

Initiates the Secretion of leutinizing hormone and follicle stimulating hormone - GONADOTROPIN RELEASING HORMONE

Initiates the development of secondary sex characteristics in females - ESTROGEN

Initiates the development of secondary sex characteristics in males - TESTOSTERONE

Initiates cell production of testosterone and estradiol by cells in the gonads - LUTEINIZING HORMONE.

The correct match for hormone and their functions are- 1- Oxytocin, 2- follicle-stimulating hormone, 3- a gonadotropin-releasing hormone, 4- estrogen, 5- testosterone, and 6- luteinizing hormone.

Oxytocin is a naturally occurring hormone that plays a vital role in the reproductive system of both men and women, including labor, delivery, and breastfeeding, as well as in human behavior.

FSH is produced by the pituitary, which is a small gland just below the brain. The pituitary plays a vital role in the development and regulation of sexual function.

Gonadotropin-releasing hormone stimulates the brain’s pituitary gland to produce and release the hormones LH and FSH.

Estrogen is a family of hormones that play a vital role in the reproductive and sexual development of women.

Testosterone is a male sex hormone. It is responsible for spermatogenesis and fertility in males.

Luteinizing hormones (LH) are hormones in the body that stimulate the reproductive system. Luteinizing hormone stimulates ovulation and stimulates the production of the hormones needed for pregnancy

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Define:
(i) parasitism,
(iii) photosynthetic nutrition​

Answers

Answer:

hey there !!!!

According to google your answer's are as follows

I} Parasitism means the relationship between two species of plants or animals in which one benefits at the expense of the other, sometimes without killing the host organism.

II} Photosynthesis is a biological process utilized by all green plants to synthesize their own nutrients. The process of photosynthesis requires solar energy, water and carbon dioxide.

HOPE U GOT ITPLZ MARK ME AS BRAINIEST IF IT HELPS !!!!!!!

Which of the following statements is true?

Photosynthesis is a type of homeostasis.
Unicellular organisms have differentiated cells.
Respiration is a type of metabolism.
Multicellular organisms are made of only one cell.

Answers

Answer:

Respiration is a type of metabolism.

Answer:

C. Respiration is a type of metabolism

Explanation:

Both B and D are incorrect because:

Multicelluar organisms have more than one cell; while singlecelled organisims only have one cell.

Also, homeostasis is a natural way an organisms body reacts to different situations, like when you sweat, your body is realising a way to lower the heat in your body. Therfore, A. is also incorrect.

Hope this helped!

Always use the gross adjustment knob before using the fine adjustment knob when focusing on the microscope 1 2 False True​

Answers

It should be true, because youre supposed to adjust the larger one before adjusting the finer one

What has a greater influence on protein levels? A. Protein degradation has a greater influence because they are denatured faster than the cell can produce them B. mRNA destroyer concentration has a greater influence because it is destroying mRNA before proteins can even be produced C. mRNA destroyer concentration has a greater influence because mRNA is destroyed right after the proteins are produced D. Protein degradation has a greater influence because outside factors like antibiotics can cause it, and it is difficult to recover from

Answers

Answer: b

Explanation: i got the answer wrong and i’m looking at the results rn

Protein is being produced with the help of a process called translation in which mRNA gets translated to produce proteins. The translation is followed after the process of transcription of DNA to RNA.

The cause of the greater influence of protein levels has defined as follows:

The destruction of mRNA could greatly influence protein levels as mRNA is considered the source for proteins to get synthesized. This is because if mRNA gets destroyed, proteins would not have been produced at all. Thus, directly influences the levels of protein.

Thus, we can conclude that mRNA destroyer concentration has a greater influence because it is destroying mRNA before proteins can even be produced. Hence, option (b) is the correct answer.

Learn more about protein here:

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Why is it necessary to separate oxgynated blood and deoxgynated blood in living organisums?

Answers

Answer:

For efficient transportation of blood.

Explanation:

ang Chlorophy
1. Which cell types remain in a non dividing stars and do not comes the trials
process?
-cles of Cells
A muscle cells and nerve cells
B skin cells and muscle cells
cles of Cells
C muscle cells and skin cells
D liver cells and nerve cells

Answers

Answer:

A. Muscle and Nerve cells

Explanation:

These two kinds of cells remain in a non-dividing state. The rest of these cell types multiply/divide.

Mr. B has been transferred to your floor to wait and see whether the chest tube allows his lungs to completely re-expand. But when he arrives, he is in severe respiratory distress. He says "I felt better before I came into the ER! Is this tube doing anything

Answers

The question is incomplete,below is the complete question.

Mr. B has been transferred to your floor to wait and see whether the chest tube allows his lungs to completely re-expand. But when he arrives, he is in severe respiratory distress. He says "I felt better before I came into the ER! Is this tube doing anything?"

You tell the Clinical Nurse Specialist (CNS). As the two of you move him into the bed, you notice that his chest tube bottle is lying on its side on the gurney, with air going into it. When you point this out to the CNS, she immediately grabs the bottle and sets it upright on the floor. You see air start bubbling through the fluid right away. "That was the problem!" she says. "They lost the water seal, and air was going into his chest from the bottle. You would not believe how many times that happens on transport." When you examine Mr. B, you have trouble detecting his lung sounds on the left. Even stranger, his apical heart sound is in the wrong place - it is over toward the right side of his chest. His respiration rate and heart rate are both increased, and he is struggling to breathe. "Let's give him a little oxygen. He'll be a lot better in a half-hour," says the CNS. "Check back on him."

QUESTION - Why would accumulation of air in his pleural space cause his heart sounds to be in the wrong place?

Accumulation of air in Mr B pleural space will cause his heart sound to be heard in the wrong place because the left side is his chest is being filled up with air making the organs in his chest to to be pushed over to the right side.

How does the design of your experiment control for outside factors that may affect the results?​

Answers

Answer:

It separate the inner environment from the outer environment.

Explanation:

The design provides the separation of the inner environment from the outer environment which is responsible to control the outside factors which directly affects the results of the experiment. The design provides control environment which is required for the experiment. In this control environment, the environmental factors will not affect the results of the experiment.

The hard outer covering of an animal is a(n) blank

Answers

Answer:

exoskeleton

Explanation: answering spree

Answer:

The hard outer covering of an animal is a(n) exoskeleton.

Explanation:

The definition of exoskeleton is "a rigid external covering for the body in some invertebrate animals, especially arthropods, providing both support and protection."

what the parts of Earth's biosphere

Answers

Answer:

lithosphere, atmosphere and hydrosphere.

Explanation:

Answer:

the hydrosphere

the atmosphere

the lithosphere

Explanation:

The hydrosphere is all waters on the Earth's surface, such as lakes and seas, and sometimes including water over the Earth's surface, such as clouds.

The atmosphere is the Earth's layer of gases, commonly known as air, that is retained by Earth's gravity.

The lithosphere is the rigid part of the earth, consisting of the crust and upper mantle.

Select the correct image,
Identify the molecule that is not a compound,
H
H
H
H-Si-H
N
H
H
о
2020 Edimentum. All rights reserved.

Answers

Answer:ITS H

Explanation: BECAUSE I SAID SO

18. Pepsin is an enzyme produced by stomach cells
to help digest protein. Stomach cells package
and secrete pepsin in which of the organelles

Answers

Answer:

Golgi bodies /apparatus

Explanation:

this organelles are responsible in for packaging and transportation of glyco proteins therefore are the organelles mainly involved in secretion of synthesised proteins

Pepsin is an enzyme produced by stomach cells to help digest protein. Stomach cells package and secrete pepsin Golgi bodies.

What are Golgi bodies?

The majority of eukaryotic cells contain the Golgi apparatus, sometimes referred to as the Golgi complex, Golgi body, or just the Golgi.

It packs proteins into membrane-bound vesicles inside the cell before the vesicles are delivered to their destination. It is a component of the endomembrane system in the cytoplasm.

It is situated close to the cell nucleus and the endoplasmic reticulum in the cytoplasm.

Pepsin is an enzyme that the stomach cells manufacture to aid in the breakdown of protein. Pepsin Golgi bodies are packaged and secreted by stomach cells.

Thus, the organelle is Golgi bodies.

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how do each of the following factors affect the productivity in this process of photosynthesis ? 1)Temperature 2) Water 3) carbondioxide

Answers

Answer:

without the right amount of temperature and water photosynthesis won't take place and without the presence of carbon dioxide...there is nothing like photosynthesis

Explanation:

1) Temperature- Above 28°C of temperature photosynthesis will not take place faster as necessary. At this temperature, the enzymes responsible for photosynthesis will not work efficient as needed .  2)Water and 3)Carbon Dioxide-Water and carbon dioxide are the reactants in Photosynthesis which means they are taken in to produce energy. Six molecules of water and six molecules of carbon dioxide are needed to break apart glucose and produce energy.

Hope the answer helps! Don' forget to mark brainliest if the  answer is truly the  best. Thank you!

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