The foxes hunt squirrels for food. Foxes that have fur the same color as their environment are better at getting closer to squirrels and catching them.
The diagram below shows a population of foxes that live in one area. At time 1, the population had the same number of brown and white foxes. At time 2, after many generations, there were many more brown foxes and fewer white foxes in the population.
1
1
Question 1
1.
Question 2
2.
How did the environment change between time 1 and time 2?
You cannot tell how the environment changed.
The environment became brown.
The environment became white.
How did the population change?
With each generation, more foxes passed on the gene for brown fur to their offspring.
Brown foxes are more likely to survive, so the white foxes changed to have brown fur.
Brown foxes are more likely to survive, so both kinds of foxes passed on the gene for brown fur to their offspring.
With each generation, more brown foxes survived long enough to pass on the gene for brown fur to their offspring.
