Answer:
The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons.
Explanation:
Answer: = B
Explanation: It's a time consuming process .
Cellulase is an enzyme. Like other enzymes cellulase is mostly made of proteins. Cellulase is used to catalyze (digest) celluloysis, which is a polysaccharide in plants' cell wall.
Answer:The day gets longer
Explanation: Because we get more sunlight than in the winter solstice