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miss Akunina [59]
3 years ago
9

how did the formation of free oxygen from photosynthesis and the development of the ozone layer stop abiogenesis

Biology
1 answer:
inn [45]3 years ago
7 0

This solar energy conversion process is known as photosynthesis. ... At this time, the oxygen level was approximately 10% of its present atmospheric concentration. ... The presence of ozone enabled organisms to develop and live on the land.

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Identify each adaptation as structural or behavioral adaptations.
Zina [86]

Answer:

Monkeys have a prehensile tail that allows them to grab and hold onto tree branches - structural

Moose make mating calls to locate potential mates - behavioral

Whales are covered in a thick layer of blubber, insulating their bodies in cold ocean waters - structural

Humans have five toes on each foot to help them maintain balance - structural

Many birds migrate south for the winter in search of food - behavioral

Explanation:

The structural adaptations are adaptations that help the organisms to survive in their environment through development of physical traits that give them an advantage. Such adaptations are the thick layer of blubber of the whales, the five toes of the humans, prehensile tail of the monkeys, rotational toe of the clouded leopard, long of the giraffe etc. The behavioral adaptations are adaptations that help the organisms to survive in their environment, but they manifested through their actions, not their physical traits. Such adaptations are the mating calls of the moos, the migration of the birds in winter, the hibernation of the bears etc.

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3 years ago
Awarding BRAINLIEST answer!! Please help asap!!
S_A_V [24]
One consequence of the overpopulation of deer would be a reduced diversity. Deer tend to eat only some types of plants, so those plants are removed, and other types of plants stay. Hope this helped! Brainliest is always appreciated.
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3 years ago
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The principal microtubule-organizing center in animal cells is the ____________. A. centrosome. B. centromere. C. kinetochore. D
Gwar [14]

Answer:

A. centrosome

Explanation:

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  • The centrosome constitutes of two centrioles and is surrounded by the pericentriolar material which is nothing but a structured matrix of proteins. 
  • It is the center through which the microtubules emerge.
  • In animal cells, the centrosome is associated with the formation of spindle fibres. 
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Mutations can be categorized based on the kind of effect they have on an organism. Blue eyes in humans are a result of a mutatio
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