Birds live virtually everywhere on Earth because they have evolved endothermy, the ability to use their metabolism to maintain a constant body temperature.
Birds belong to the class aves; they have an extremely efficient, one way breathing system with additional air sacs. Flying birds have strong, hollow bones and powerful flight muscles. Most birds can fly, they have a strong heart and an efficient way of breathing; which are necessary for birds to fly.
Answer:
Recruiting Type IIB motor units.
Explanation:
Although the type IIB motor units are highly vulnerable to ache and fatigue yet these are the one that produce most strength when stimulated. They are the first to stop when the force on a muscle is reduced and also the last when the most force is required by muscle fibers.
Answer: The purple gene is dominant over the white gene. So the offsping all have purple flowers but they carry the gene for white flowers
Explanation:
The answer is the last choice the organism has 2 parents
