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Alexandra [31]
3 years ago
14

Why do humans need chimneys

Biology
1 answer:
svet-max [94.6K]3 years ago
4 0
Chimneys are typically vertical, or as near as possible to vertical, to ensure that the gases flow smoothly, drawing air into the combustion in what is known as the stack, or chimney effect.
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Answer:

If larger seed became available, directional selection will act in favor of bigger beak finch.

Explanation:

In the case that more large seeds were to become available, then directional selection will start to influence in the beak size, favoring those individuals with bigger beaks. Those individuals with shorter beaks will start to disappear as these animals won't be able to eat the larger seed.

Directional selection <em>increases the proportion of individuals with an extreme phenotypic trait,</em> in this case, large beaks.

This selection presents more frequently in those cases in which <em>interactions between living organisms and the environment</em> modify in the same direction.

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Explain how a starfish's body plan and anatomy enables invertebrate to perform the essential functions it needs to survive.
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