Generally the soil in tropical areas is acidic so they would have to be adapted to the soil
The cell membrane is semi-permeable, kind of like a filter to let some molecules in and keep larger molecules out
Answer:
Go to a sex clinic and ask if this is a personal enquiry or listen in your pshe lessons if you have them
Explanation:
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.
