Answer:
X: Positive gravitropism
Y: Negative gravitropism
Explanation:
i just did the quiz and got it correct
Answer:
Transitional epithelium has dome shaped cells on the apical surface.
I know for a fact c is one of the correct answers and I also think b is the other correct one
What do you mean by "What is a shooting star, a comet or a meteor burning in our Earth’s Atmosphere?"
edit: ohhhhh you are asking what a shooting star is...
its particles of comets or astoroids/metor enter the atmosphere at very high speeds and burn up
If you do not have variations to be selected by natural or sexual selection on their superior abilities to survive and reproduce successfully then nothing can be naturally selected against the immediate environment.