I don't understand what you are asking..
The ribosomes are like blood
Answer: Keystone species
Explanation:
A keystone species is the species on which other species of the ecosystem depends on. The keystone species can be a predator or prey. It maintains the balance of the population of other species in an ecosystem.
The basic unit of nucleic acids are known as nucleotides
Hopefully this help you!!!:)
The control group is B and experimental group is A
