Answer:
Natural Selection
Explanation:
In natural selection process of evolution, traits that are essential for an individual to be fit enough to survive under environmental stress become dominant.
Since the flowers are of blue or yellow color, it is essential for a bee to be able enough to perceive the blue and yellow color. Hence, the eyes of bee with time have evolved to perceive these two color so that they can pollinate flower.
The nucleolus is the central support structure
Glucose and oxygen!!!
CO2 + Water in the presence of sunlight results in glucose + oxygen
The answer to this one is D
