Answer:
The correct answer is option A. <em>birds can fly.</em>
Explanation:
One characteristic that distinguish birds from all other animals is that birds have feathers. Birds are the only animals that have feathers, actually it is said that if an animal have feathers it must be a bird. Feathers serve many purposes for birds: they allow birds to <em>fly</em>, serve as insulators for their eggs and their young's, and also give them protectrom from water and cold temperatures.
Answer:
C. a decrease in the chromosome number in every generation.
Explanation:
hope it helps .
Plant has such a developed structure to protect they have cell wall which give it rigidity and structure and also have cellulose which provide strength
Answer:
The reason the compressed air gets cold after being used is due to a process known as adiabatic cooling, a property of thermodynamics. A gas, initially at high pressure, cools significantly when that pressure is released. The compression needed to turn a gas to liquid allows a large amount of gas to fit in a relatively small space, and when that gas is released to a large space, it rapidly expands to fill the space.
