Answer:
Comets travel in orbits around the Sun. Some comets take less than 200 years to orbit the Sun. They are called short-period comets. Short-period comets are thought to originate in the Kuiper Belt, which is a belt of icy objects just beyond the orbit of the planet ___Neptune___ The dwarf planet ___Pluto____ is located in this belt.
Explanation:
To control the population of insects, if insecticides are used then how it will affect the population of birds?
Answer: Birds are exposed to insecticides through ingestion by mistaking, they ingest pesticide residues when they trim their feathers with their beaks or may drink or bathe in contaminated water. The effects can range from death due to poisoning to a variety of effects such as weakening of eggshells, deformation and slow growth of chicks, lack of appetite, weight loss, immune system damage, hormonal disruption. In addition, insect-eating birds are at a loss when insecticides cause a drop in the number of insects available, especially when they have chicks to feed.
Explanation:
Insects are a class of invertebrate animals characterized by having one pair of antennae, three pairs of legs and two pairs of wings (which, however, may be reduced or missing). They comprise the most diverse group of animals on Earth with an estimated thirty million undescribed species, potentially representing more than 90% of the life forms on the planet. Moreover, they can be found in almost every environment on the planet, so they are not only highly diverse, but also incredibly abundant.
Like any species on the planet, insects play a vital role in the ecosystem, so that a change in the population can compromise the survival of everything around them. On the other hand, insects called "pests" are those insects observed in systems and whose populations cause damage to crops. Although both beneficial insects and pest insects are part of any ecosystem and are also present in human-managed systems. Humans combat these pests using insecticides, which are chemical compounds used to kill insects. They are usually very specific since the product only affects the organism it damages, leaving the rest of living beings and the environment unharmed. And they have low toxicity to humans and animals.
The most common way in which birds are exposed to insecticides is through ingestion by mistaking, for example, a pesticide granule for a seed, or indirectly, by consuming contaminated prey (insects). Birds may also ingest pesticide residues when they trim their feathers with their beaks or may drink or bathe in contaminated water. It should be noted that it also depends on the toxicity of the chemicals, the magnitude and duration of exposure. The effects can range from death due to poisoning to a variety of effects such as weakening of eggshells, deformation and slow growth of chicks, lack of appetite, weight loss, immune system damage, hormonal disruption. In addition, insect-eating birds are at a loss when insecticides cause a drop in the number of insects available, especially when they have chicks to feed.
Compose a hypothesis for each of the following questions.
Will planting seeds
too shallow or too
deep prevent their
growth?
Answer:
No
Explanation:
it doesn't prevents their growth only if they get the necessary source
INTRODUCT
TO BIOLOGI
UNIT 1
UNIT 2
Exercise ?
А.
Encircle the best suitable answers.
i. Ms. Aisha was busy in dissecting and analyzing the heart of frog. Proba
she is a:
a. Cell biologist
b. Taxonomist
C. Histologist
d. Palaeontologist
Answer: C. Histologist
Explanation:
A cell biologist refers to a person who studies cells and their functions and their interactions with the biological organisms.
A taxonomist refers to a biologist who classifies organisms into their categories.
A histologist, can also be called a histotechnician, and this is someone who prepares tissue samples for the pathologist to study. A histologist cut samples from organs which are used for microscopic tissue analysis.
Palaeontologist is a person who studies fossils in order to get information regarding life on Earth.
Question 16 of 30
John is testing the effect of temperature on the solubility of sugar in water.
He plans to determine the mass of sugar dissolved in a saturated solution.
He will begin with a known mass of sugar and add sugar to water until the
solution is saturated. He will then calculate how much sugar dissolved by
subtracting the remaining mass from the initial mass.
He organized data about his experiment in the following table:
Group A
Group B
Group C
Volume of water
100 mL
Temperature
25°C
1000 g
Initial mass of
sugar
800 g
Final mass of
sugar
Which factor should be the same in all three groups?
Answer:
As John is testing the effect of temperature on the solubility of sugar in water. To test this, he will measure the amount of sugar dissolved at different temperature level.Explanation:
I hope it's helpful for you ☺️The volume of water should be the same in all three groups.
What is solubility?Solubility is the property of a substance to dissolve in a solvent to form a homogeneous solution at a particular temperature and pressure.The volume of water should be the same in all three groups. This is because the experiment is testing the effect of temperature on the solubility of sugar in water, and any variation in the volume of water could affect the results.
By keeping the volume of water constant, John can ensure that any changes in the amount of sugar dissolved are solely due to changes in temperature and not changes in the amount of water. Therefore, he can compare the results of each group and draw conclusions about the effect of temperature on the solubility of sugar.
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Question 3 (Multiple Choice Worth 2 points)
(01.03 MC)
Why is it difficult to get people to follow regulations protecting a common?
O People care more about money than the welfare of others.
O Breaking these regulations does not come with direct penalties.
The rules are too strict and prevent meeting basic needs.
O Common area resources belong to everyone.
I'm sorry for being too late but the answer is, Breaking these regulations does not come with direct penalties.
Carry out a tri-hybrid cross between XX(tall) YY(fat) ZZ(fair) and xx(short) yy(slim) zz(black). Find their genotypic and phenotypic ratios.
Answer:
Genotypic ratio = 100% XxYyZz
Phenotypic ratio = 100% tall, fat, fair.
Explanation:
For a trihybrid cross involving the genes XX which codes for tallness, YY which codes for fatness, and ZZ which codes for fairness with their alternate forms being xx, yy, and zz respectively; each gene will segregate into their respective alleles and combine to form gametes during meiosis, such that:
XXYYZZ ----> XYZ, XYZ, XYZ, XYZ, XYZ, XYZ, XYZ, XYZ
xxyyzz -----> xyz, xyz, xyz, xyz, xyz, xyz, xyz, xyz
These gametes then combine randomly during fertilization to give all XxYyZz offspring.
XYZ x xyz
XxYyZz
Since X is dominant over x, Y is dominant over y, and Z is dominant over z, then XxYyZz individuals that are produced from the cross would be tall, fat, and fair. Hence
Genotypic ratio = 100% XxYyZz
Phenotypic ratio = 100% tall, fat, fair.
See the attached image from the Punnet's square analysis.
How did Mendel control which plants were
being pollinated?
A. He used artificial cross-pollination,
B. He only used female plants in his experiments,
C. He allowed any plant to be pollinated,
Answer:
Mendel was interested in the offspring of two different parent plants, so he had to prevent self-pollination. He removed the anthers from the flowers of some of the plants in his experiments. Then he pollinated them by hand with pollen from other parent plants of his choice.
Mendel controlled which plants were being pollinated by using artificial cross-pollination. Details about Mendel experiment can be found below.
How did Gregor Mendel control pollination?Gregor Mendel is referred to as the Father or Genetics because of his immense role in inheritance.
Gregor Mendel performed series of experiment using pea plants where he crossed them to observe the inheritance of several traits.
However, Gregor Mendel was able to control the process of self-pollination among the pea plants he used by employing artificial cross pollination.
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Synaptic facilitation, a form of short-term plasticity, is primarily due to ______________. A. insertion of AMPA receptors into the post-synaptic membrane B. depletion of the releasable pool of vesicles C. prolonged elevation of presynaptic calcium levels following synaptic activity D. changes in Na channels located on the post-synaptic membrane
Answer:
The correct answer is - C. prolonged elevation of presynaptic calcium levels following synaptic activity.
Explanation:
Synaptic facilitation is a process of short-term plasticity that transiently increases synaptic transmission for less than a second, which is considered an essential part of playing a critical role in information transfer and neural processing.
It is evident that such an increase in the synaptic transmission is occur due to prolonged elevation of presynaptic calcium levels following synaptic activity.
learn and observe air resistance by throwing objects from considerable height a; tissue paper b: plastic spoon c: stainless steel spoon take a record of your findings and observations and jot them down.
Answer:
Speed: Tissue fell slowest(lowest mass and large surface area acts as parachute)
Plastic spoon fell pretty quick
And the stainless steel spoon fell the fastest because of the weight and small mass
The tissue is the only item out of the 3 that makes 0 noise when it hits a surface.
How do plants use carbon dioxide? A. To build proteins. B. They store it as fuel in limestone deposits. C. To produce sugars. D. They release it as waste.
Answer:
C) To produce sugars
Explanation:
Through photosynthesis, plants convert carbon dioxide and water into sugar.
Have a nice day! ♡
I have earned about 20 points that aren't been added why
Answer:
I am not sure-
Explanation:
I mean you should refresh the page or smth unless the question was deleted
Hope it helps c:
What happens if the products of digestion of proteins in a boiled egg are more than what the body needs ?
Answer:
sry I don't know but need more points
Explanation:
I surely answer yr next question
Which of the following tissues is used in the formation of flowering plant organs?
1. Connective tissues
2. Vascular tissues
3. Epithelial tissues
4. Nervous tissues
Vascular tissues are the ones used in the formation of flowering plant organs. The correct option is 2.
What are vascular tissues?Vascular tissue is a complicated conducting tissue found in vascular plants that is made up of multiple cell types.
The xylem and phloem are the primary components of vascular tissue. Internally, these two tissues transport fluid and nutrients.
These tissues also help in the formation of flowering plants.
Thus, the correct option is 2.
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VR of wheel and axle is 5.what does it mean. plz help me this question I will Mark u as brainliest
Explanation:
VR is 5 means that the load moved is five times the effort applied and the distance moved by the effort is five times the distance moved by the load at the same time interval.
I hope it helps you
Answer:
The mechanical advantage of a wheel and axle is the radius of the wheel divided by the radius of the axle
As air rises, it transfers heat from the surface of Earth to the upper levels of the atmosphere in a process called
convention is your answer
what are the 4 pairs of DNA bases that form in the double helix?
Answer:
Attached to each sugar is one of four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by bonds between the bases, adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
Answer:
Double Helix
Attached to each sugar is one of four bases: adenine (A), cytosine (C), guanine (G), or thymine (T). The two strands are held together by bonds between the bases, adenine forming a base pair with thymine, and cytosine forming a base pair with guanine..
What might happen to the genes that break down carbohydrates when cats eat lipids and fats, but no carbohydrates?
Answer:
Goes into resting position.
Explanation:
The genes become dormant or in resting position that break down carbohydrates when cats eat lipids and fats, but no carbohydrates because of no use of that genes. The genes can't give instructions to the hormones that produces enzymes which take part in the digestion of carbohydrates so due to no need for the genes of carbohydrates, the genes goes into resting position until carbohydrate is eaten by the cat.
Which is a diagram that shows the flow of energy among different trophic levels? O A. Energy pyramid O B. Food chain O C. Solar energy O D. Food web
Answer:
A
Explanation:
an energy pyramid shows the flow of energy in the different trophic levels.
hope this helps please like and mark as brainliest
3. Which term describes the offspring of a
first-generation cross between parents with
different forms of a trait? sc.7.L.16.1
Answer:
the passed on from to offspring
Amoeba Sisters Video Recap of Meiosis: The Great Divide
answers
Answer: I have no idea
Explanation: This question does not have enough information for me to answer it.
which of these is a cash crop
A. cucumbers
b. grass
c. latex
d. strawberries
Answer:
The answer is Cccc Latex
the answer is bbbbb grass
what substance acts to prevent sudden pH changes in bodily fluids?
Answer:
buffer
Explanation:
because it protects large changes in pH
•Science
analysis of disease resulting from nutrient deficiency
Hello user,
The answer is Protein Energy Malnutrition ( PEM )
hope it helps you ...
Is plasma membrane and cell coat the same?
it happens it happens when moving objects or travels as a given distance in a shorter amount of time.
A.accelerates
B.moves
C.slows down
D.stops
Answer:
I think option (A) is right answer
what is a photon. A. part of a ribosome B. A light particle C. A carbon dioxide molecule D. Part of a chloroplast
Which two phrases describe the nature of the gravitational force?
Answer:
a force that pulls objects toward each other
Answer:
B
Explanation:
All of the following are evidence for the big bang except: A. Cosmic background radiation B. Almost all galaxies are red-shifted C. The sound from the bang echoes though the universe D. The universe is expanding
Answer: C. The sound from the bang echoes though the universe
Explanation:
Cosmic background radiation proves the big bang because it shows that as a result of the big bang, the early universe was really hot but cooled as it expanded. Cosmic background radiation is the result of that earlier heat.
Galaxies being red-shifted means that the space between galaxies is increasing which means that the universe is expanding which provides evidence for a big bang because particles move away the single point they are concentrated in.
There was no actual bang from the big bang and sound cannot echo through space so c is incorrect.
Refer to Animation: Filtration, Reabsorption, Secretion. Cells of the excretory tubule _________water by osmosis, from which we can conclude that the solute concentration in these cells must be _________ than in the filtrate. reabsorb; lower excrete; higher reabsorb; higher excrete; lower 2. Refer to Animation: Filtration, Reabsorption, Secretion. What drives the reabsorption that occurs in animal excretory systems
Answer:
Reabsorption, Higher
Explanation:
What drives the reabsorption to take place in the executory system is the presence of slow diffusion of some substances and active transport for others. Filtration removes the water form the blood and other substances get dissolved into blood.Which of the following is a scientific observation about the panther pictured
below?
Florida Panther
O A. The panther is enjoying the warmth of the sun.
B. The fur on the panther's head is darker than the fur on its body.
C. The panther's coloring is for camouflage.
O D. The panther is an important American symbol.
Answer:
D, The panther is an important American symbol
pls mark me
Answer:
d
Explanation:
