Henry was studying two populations of the same species of lizards. one population lived on an island and the other lived on the mainland. both populations were affected by a hurricane that hit the island and the mainland with equal force. a year later, henry was testing the gene frequency and saw a decrease in genetic variation in the island species, but not in the mainland species. which best describes a conclusion he might have reached?

gene flow greatly affects small populations, but large populations can recover.
genetic drift greatly affects small populations, but large populations can recover.
gene flow greatly affects large populations, but small populations can recover.
genetic drift greatly affects large populations, but small populations can recover.

The correct answer would be Genetic drift greatly affects small populations, but large populations can recover.

Genetic variation is one of the mechanisms of evolution due to which the allellic frequency of a population changes as a result of random sampling of the organisms.

It may result in the loss of the genetic variation or alleles in a population.

Its results are maximum when the population size is small as they are more susceptible to the random changes.

In addition, its effects are increased when the population size is adversely reduced due to a natural disaster.

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation:

i think the answer is b.