Hi!
A catalyst is a substance that speeds up the rate of a chemical reaction.
Have a good day/night.
A leech is an example of a parasite
The answer is choice B.
Nondisjunction happens when the chromosomes don't separate correctly during meiosis, which can result in an extra copy of certain chromosome.
I hope this helped a little bit.
2nd option, adapt means getting use to the environmwnt for survival instinct
