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.
Answer:
its blurry but based on what i see the second one
Explanation:
Answer: They move during that time because of the fact that the earth move around one its axis around the sun.
Explanation:
Mendeleev called the rows periods.