The group in an experiment that all the conditions stay the same is the control group.
Food is made up of cells. those cells contain theyre own DNA without it they wouldnt exist. and when we consume it from other organisms it dies and breaks down and doesnt enter the blood stream
Answer:
1. evolution
Explanation:
reproductive seperation hinders the capability of different species to produce an offspring and it also serve as a barrier to maintain integrity of each species wherein genes flow or reduced
Answer:
Concentration gradient.
Explanation:
Diffusion may be defined as the process of the movement of solute particles down the concentration gradient. This process does not require the expenditure of energy.
The main driving force in diffusion is the concentration gradient. The molecules generally move from its region of the higher concentration towards the region its lower concentration.
Thus, the correct answer is option (3).
