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alina1380 [7]
4 years ago
9

Help with this I meed to get it done today please

Biology
1 answer:
Nesterboy [21]4 years ago
4 0
#11.) Phacops. It lived in the late Devonian Period (~400 million years ago).

#12.) Carbon-14 is a good radioactive isotope for determing the age of artifacts from a burial site thought to be associated with the most recent early humans because it is present in all organic matter (which humans have, of course).

#13.) 3, Devonian.

#14.) From the Devonian Period through the Triassic Period.

#15.) Cenozoic.
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Here are two types of rabbits: those that strictly eat grass and those that strictly eat berries and flowers. A drought occurs o
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Answer:

Rabbit's population will reduce drastically

Explanation:

As it is clear from the given description, that drought adversely affects the production of flower and berries and hence the population of rabbits depending on berries and flowers will be adversely affected. Therefore, there are high chances of rabbits dying because of insufficient food during drought

Also, the foxes and hawks feed on the babies of rabbit. This further reduces the population of rabbits as the new ones are killed before attaining fertility.

Overall due to both predation (by foxes and hawks) and the drought the  population will reduce drastically.

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3 years ago
Which of the following terms best relates to the mechanisn that flatworms use to obtain oxygen pharynx diffusion spiracles excre
bagirrra123 [75]

Flatworms absorb oxygen by diffusion mechanism through their skin to the cells in their bodies. Since flatworms do not have a circulatory system, their bodies' cells are positioned close to the skin to ease the uptake of oxygen from surrounding fluids or water.






6 0
3 years ago
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Adaptive radiation A. reduces the size of prosperous ecological communities. B. increases extinction rates. C. allows new specie
VMariaS [17]

Answer:

The correct answer is- C. allows new species to occupy different habitats.

Explanation:

Adaptive evolution is a type of evolution that allows the generation of new species from an ancestral species. This evolution occurs mainly due to the separation of habitat between two populations of species.

So when some members of ancestral species get new habitat which is different in ways like in food availability, food type, environment, etc then this isolated population adapts to the new environment by doing changes in their gene which results and the development of new species. So the correct answer is C.

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