The correct option is c. (20 m) .
As the formula to calculate wavelength is :
wavelength = wavespeed / frequency
Explanation:
an allele is an alternative form of a particular gene whereas a trait is the character that is determined by the allele.
I can't see the well but chemical changes happen when a substance combines with another to form a new substance. These processes are called chemical reactions and are not reversible except if you do more chemical reactions... So the well that is changing it's state of matter should be the one undergoing a chemical change. For, example boiling or freezing
Answer:
B; primary consumers are the ones who eats the producers
