I am not sure if I am right but, I think it is called the desertification process.
A) photoreceptors
b) myopia
Answer:
Standing wave
Explanation:
Standing waves are waves which crest amplitude does not change, so it appears the form is not changing.
Answer:
a catalyst
Explanation:
An enzyme is an example of a catalyst which speeds up or controls the chemical reactions in an organism. A catalyst speeds up the rate of the reaction without itself being consumed by the reaction.
