Question

why it is necessary to begin this experiment with buds in which petals are closed ?​

Answer 1

Explanation:

Why is it necessary to separate oxygenated and deoxygenated blood in mammals and birds? Ans. It is necessary in mammals and birds to separate oxygenated and de-oxygenated blood because this makes their circulatory system is more efficient and helps in maintaining constant body temperature.

Answer 2

Answer:

hisshhssgdhueudhdgeeh special eval officer