Yes it is therefore the answer is true
The stronger survived and the weaker passed on... Those with a weaker immune system had trouble with sickness and usually ended up passing on but those with strong immune systems were stronger and healthier and lived.
Pretty sure its Ph scale i did a question like this once but i cant remember....its either Ph or richer
Answer:
gene pool? species?
Explanation:
Question is a bit vague hope this helped tho :(
