Answer:
The main difference between bryophytes and tracheophytes is that bryophytes are nonvascular plants, whereas tracheophytes are vascular. Mosses, liverworts, and hornworts are examples of bryophytes, whereas ferns, gymnosperms, and angiosperms are examples of tracheophytes
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If the results of an experiment are considered valid they will? A. Give the same nontestable results B. Give The same outcome when repeated C. Give different outcomes in different parts of the world D. give different results from repeated by different scientist
Answer:B
Explanation:
If it's valid, then it has substantial evidence to back up the results, which will be the same over and over again.
Define the word ⇒ Biosphere
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The biosphere is a narrow zone of the earth where land, water, air interact with each other to support life.
Answered by Gauthmath must click thanks and mark brainliest
perfect 2 minute speech on deforstation
Answer:
A warm welcome to all present here. Today I am going to give a speech on deforestation. Deforestation is the process of cutting down the forest, without replanting them again. The causes for deforestation are to obtain wood and fuel or to use the land for farming, mining or construction. From the time of civilization till now, forest wood is very essential for humans in our day to day life.Explanation:
U can add more if u like it!What is responsible for the red tide phenomenon? It is a phenomenon that usually coincides with storm surges; the name comes from the red kelp that often washes ashore as a result of rough weather. Red tide occurs in patches of water where certain species of dinoflagellates flourish. They are so abundant that the water becomes discolored and takes on a red hue. Red tides occur once a year and in accordance with the lunar cycle. The water appears red as a result of reduced levels of photosynthetic pigmen
Answer:
Red tide occurs in patches of water where certain species of dinoflagellates flourish.
Explanation:
Red tides refer to the noticeable microalgae proliferation that can be recognized for being a big spot in the sea of a characteristic coloration. This phenomenon is caused by two microalgae groups: diatoms and dinoflagellates, both part of phytoplankton.
Red tides occur when certain environmental factors -such as temperature, light, nutrients availability, ph, etcetera- favor the overproduction of these organisms. These species produce toxins that turn to be dangerous for other animal species that feed on them.
Because these microorganisms produce pigments, their accumulation on the sea surface can be noticed as reddish, brown, or greenish color spots of variable extension.
Please help me...will give braniliest
give a short introduction of carl von linnaues and rh whittakers regarding classification of living beings one major point
A dependent variable is:
Answer:
the variable that is being measured or tested in an experiment
Explanation:
just fax
Select all that apply.
Which conditions relate to the research of van Helmont?
plant mass related only to soil
conclusions partly correct
demonstrated plant food from soil
conducted around 1400 AD.
plant mass related to H 20
Answer:
I'd say the best Answer is A & C
Explanation:
como se llama el primer cartílago de la tráquea
Answer:
cricoid cartilage
Explanation:
I think
Do populations of different species of birds that live in the same community compete? Explain.
Please help me
No.3 plzz ...?
Any one
2^n=32
n=5
It doesn't really match up with the options so not sure, my best guess would be either choosing 16 or 4. 16 in case the person calculated as 16 times 2 = 32 and 4 bc its the closest.
Which of the groups below has suffered the greatest percentage of species extinctions since 1600 (A) birds, (B) fishes, (C) mammals, (D) reptiles
(a) Birds is the correct ans
Explanation:
.......
Answer:
My guess would be mammals
Explanation:
Habitat destruction
ASAP Determine whether the statement is true or false and why. “We have discovered a series of humanoid fossils that are similar to humans, but not human. Each of these humanoid species dates to a different period in time becoming more human-like the closer to the present they are, showing a clear evolution into humans.”
A. False, it should read “We have discovered no series of humanoid fossils that are similar to humans, showing a clear lack of any transitional fossils as evidence of human evolution”
B. True
C. False, it should read “We have discovered a series of humanoid fossils that are similar to humans, but not human. Each of these humanoid species dates to a different period in time becoming less human-like the closer to the present they are, showing a clear evolution away from humans.”
D. False, it should read “We have discovered a series of humanoid fossils that are similar to humans, but not human. Each of these humanoid species dates to the same period in time, showing that many human-like species existed at once, but all went extinct.”
The statement is true.
Human evolution is a scientific term that refers to the process of biological evolution of the human species from its ancestors to the present.
The current knowledge of human evolution is the result of the convergence of various sciences such as:
Genetics.Physical anthropology.Paleontology.Geochronology.Archeology.Linguistics.The results of various studies relate the current human species as a result of multiple evolutionary processes of hominimus species, ardipithecus, australopithecus, and homo that through time improved different aspects until reaching the human species that exists today.
According to the above, what is described in the fragment presented is true because it presents a correct version of what happened in human evolution. Meanwhile, options A, C and D are incorrect because they do not present correct information regarding human evolution.
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what is tissue A called?
Answer:
Tissue is a group of cells that have similar structure and that function together as a unit. A nonliving material, called the intercellular matrix, fills the spaces between the cells. ... There are four main tissue types in the body: epithelial, connective, muscle, and nervous
Which of the following statements about active transport is true?
Molecules move down the concentration gradient.
ATP is not required to move molecules through the membrane.
ATP is formed as molecules pass through protein channels.
It results in a higher concentration of molecules on one side of the membrane.
Answer:
It results in a higher concentration of molecules on one side of the membrane.
Explanation:
Active transport is the transport of molecules up the concentration gradient. This means that molecules are going from low density to high density. This is the opposite of natural diffusion. So, it requires ATP to move the molecules this way. Diffusion normally occurs to maintain homeostasis and an equal amount of concentration on both sides of a membrane. But, with active transport, since molecules are moving up the gradient, the opposite happens and the concentrations are unequal.
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Question
Use the text to identify the sentences with evidence that matches the claim.
Claim 1 --> Tropical rainforests contain more biodiversity than all other biomes.
1) Biodiversity refers to the total number of different species of all kinds living in an area.
2) Tropical rainforests have many of the climate characteristics that organisms of different species need to grow, such as warm temperatures, plenty of rain, and many food sources.
3) There are large amounts of daily sunlight, which provides a great deal of energy to a variety of rainforest organisms.
4) Surprisingly, rain forest soil is very poor.
5) Due to the large amounts of rainfall, nutrients are leached out of the soil quickly.
6) Warm temperatures cause dead organisms to decay quickly, and the nutrients are then used by many different plants.
1, 2, 5
1, 2, 5
1, 3, 4
1, 3, 4
2, 3, 6
2, 3, 6
1, 4, 5
Answer:
44
Explanation:
44-7=55
Forensic anthropologists are trying to determine the age of a male skeleton that has been uncovered. They conclude that he must have been between 16 and 19 judging by the measurement of his
ribs
clavicle
pelvic bone
tibia
There are four different combinations of offspring genotypes in every Punnett square. Fill in the blanks below to complete the ratio for the Punnet square shown to the right.
Where's the Punnett square?
ASAP
When you become too cold, your hypothalamus will signal what parts of your body to raise the temperature?
A. Muscles and kidneys
B. Skin and pancreas
C. Muscles and skin
D. Kidneys and lungs
Answer:
c
Explanation:
Single-celled organisms with cell walls do not have contractile vacuoles. Suggest why.
Which would make for a weak claim?
• a blog cited as the source
• a large sample size
• clear variables and controls
• multiple trials
Answer:
A
Explanation:
Blogs can have a lot of misinformation
Which of the following is the primary method of controlling citrus canker?
quarantine and destruction of infected plants
treatment with fungicides
genetic modification of plant stock
treatment with herbicides
Answer:
genetic modification of plant stock
How are gymnosperms in category gnetophyta usually pollinated?
A. by wind
B. by hand
C. by insects
D. by water
Answer:
by insects
Explanation:
How can evidence from an experiment be explained in relationship to the hypothesis?
• as a prediction
• as a question
• as an inference
• as a conclusion
Answer:
As a conclusion
Explanation:
A hypothesis is a tentative statement about the relationship between two or more variables. It is a specific, testable prediction about what you expect to happen in a study. A hypothesis is a prediction based on the theory being tested. The evidence can support the Hypothesis or invalidate the Hypothesis.
Answer:
A conclusion
Explanation:
It sums up everything that you did
An ecosystem experiences a loss of denitrifying prokaryotes. Will this loss affect the health of the ecosystem?
yes it will, it will ruin the food chain
Frequently, a group of related species will each have a unique courtship ritual that must be performed correctly for both partners to be willing to mate. Such a ritual constitutes a ________ ________ reproductive barrier. Group of answer choices
Complete question:
Frequently, a group of related species will each have a unique courtship ritual that must be performed correctly for both partners to be willing to mate. Such a ritual constitutes a ________ ________ reproductive barrier.
Group of answer choices
A) behavioral . . . prezygotic
B) mechanical . . . postzygotic
C) temporal . . . prezygotic
D) gametic . . . postzygotic
Answer:
A) behavioral . . . prezygotic
Explanation:
The biological concept of species states that individuals of a species can not mate and reproduce with individuals of another species. But if they get to reproduce, the progeny will not be viable or fertile. There will not be any reproductive success.
There are different reproductive isolation mechanisms, which are barriers that inhibit or interrupt the genetic flow between different species.
Reproductive barriers are isolation mechanisms that prevent mating between two or more species. The prezygotic mechanism avoids fertilization between individuals of different species, while the postzygotic mechanism impedes the zygote to develop and reach the adult stage.
There are different types of reproductive barriers.
Pre-copulatory o pre-ziygotic:
Ecological or by habitat isolation; Seasonal or temporal; Sexual o ethologic; Mechanic; Gametes incompatibility.Postzygotic mechanisms or barriers include
Hybrid inviability, Hybrid sterility, Hybrid reduced viability or fertility, Cytoplasmic interactions.Behavioral isolation is also known as ethological isolation or sexual isolation. This is a prezygotic barrier that refers to the fact that even when many species occupy the same area, they are not sexually attracted to each other, and might be rejected because of behavioral factors, not getting to mate. This mechanism includes courtship patterns or mating rituals and specific chemical signals that allow recognition between individuals of the same species.
You observe a cell in a stained section of connective tissue. The cell has an indented nucleus and obvious cytoplasmic granules. Upon further testing, you determine that the granules contain histamine. This cell is most likely a(n) _____. Multiple choice question. mature neutrophil mast cell eosinophil B cell
When many nucleotides link together, they form a biomolecule responsible for storing genetic information called a
Group of answer choices
protein.
nucleic acid.
retinal.
carbohydrate.
When many nucleotides link together, they form a biomolecule responsible for storing genetic information called nucleic acids. Thus, the correct option is B.
What are Nucleotides?Nucleotides may be defined as the basic unit of the polynucleotide chain of nucleic acids such as DNA or RNA. Each nucleotide is composed of three components. They are as follows:
A nitrogenous base.A pentose sugar (ribose in the case of RNA, and deoxyribose in the case of DNA).A phosphate group.Nucleotides are the monomers of nucleic acids. Each nucleotide is joined together by covalent bonds known as phosphodiester linkage. This linkage is present between the phosphate group of one nucleotide and the third carbon atom of the pentose sugar of next nucleotide.
Therefore, nucleic acids are formed when many nucleotides link together which are responsible for storing the genetic information.
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Helpppppp please!!! How do membrane proteins contribute to the membrane potential?
Answer:
the answer is B
Explanation:
the answer is b
which of the following are human activities that can negatively impact ecosystems.
Answer:
Hey not sure if there is something that is supposed to be viewable but some common human activities that can impact ecosystems are, deforestaion, pollution, littering, fracking, spilling oil into the oceans.
Explanation:
Answer:
You didn't put a photo but cutting down trees of putting chemicals into the water/earth can harm ecosystems
