The most likely explanation for the variation is the offspring were produced from different combination of genes. A single pair of gold fish mentioned in the question means a male and a female gold fish. The two of them mated and contributed different genes to the fertilized fish eggs, this results in production of various body shape and colouration which is known as variation.
A) ability to learn or acquire the new traits
Explanation:
It's the process that species go through in order to become accustomed to an environment.
Answer:
C low competition for glucose
Explanation:
From the given answer choices and information,
It cannot be A since there is no visual disease or any indication of disease in the experiment
Cannot be B, since space would not be an issue since it clearly hit 111 on day 3
and cannot be D since there is no indication of a change in temperature.
However, we know Petri Dishes have nutrients to stimulate cell growth, and those resources are not unlimited therefore we can only attest that a large portion of the nutrients have been consumed and starved some of the cells thus causing a population decrease
ANSWER:C) farming and hiking