In Year 1, suppose a new predator that could not differentiate between the light green and dark-green lizards was introduced on
the west side of the stream. This was the only predator of lizards on this side of the stream. How would the introduction of this predator affect the population ratio of dark green to light-green lizards? A. The proportion of light-green lizards would increase drastically in the following year. B. The ratio would gradually increase every year. C. The ratio would not show any changes in the following year. D. The proportion of dark-green
C. The ratio would not show any changes in the following year.
Explanation:
Since the introduced (and only) predator can not differentiate between the tone of the lizards (dark and light), you can assume it will feed from them in an equal proportion, so the ratio between dark green and light green lizards will not be affected.
It seems to have choices. The exposure mutagens may lead to the mutation. When the mutation add up to a certain amount and can lead to cancer. So exposure mutagens will increase the cancer risk.
