Answer:
Birds have remarkably specialized bones that are pneumatic, because they are full of air sacs that provide a continuous flow of breath throughout their bodies. In short, their lungs are essentially hooked up to their bones.
The answer is B, because in mRNA, the only change in bases is that A transcribes into U
I really don't know how to help you here, bud.
Answer:
d.
Explanation:
Pruning is the process by which unused connections between neurons are eliminated. This has been studied and scientists believe this process takes place in order to get rid of any damaged or degraded neurons, allowing specific areas of the brain to improve their networking ability. Which is why it is a big area of study in regards to child development.
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