Question

Trees need water so they can make their own food. Trees take in water using their roots.

If a drought occurred reducing the amount of available water, some trees, such as those with deep roots that can reach the water table, would be naturally selected over other trees. If the drought continued for an extended period of time, the trees would likely evolve until most of the trees possessed drought-resistant characteristics.
Which of the following allows natural selection and evolution to occur?
A. increasing the height of the water table
B. having an identical genetic make-up
C. using other plant parts instead of roots to absorb water
D. differences in the characteristics of individual trees

Answer 1

d

Step-by-step explanation:

Answer 2

The answer is D. Natural selection favors the organisms best fit for their environment. These are organisms that can best survive in a given situation. Natural selection occurs when organisms have different characteristics, and vary genetically. This is logical because some organisms die, while others live, during a trying event. This leaves room for evolution. The “weak” trees would die off, leaving behind the stronger trees, which reproduce and create strong trees. Eventually all the weak trees die off, and the strong, drought-resistant trees remain.