Question

Based on Darwin’s ideas of descent with modification and natural selection, which observation would best support the idea that increased competition causes changes in a species?(1 point)
Responses

A population of rattlesnake goes extinct as the water resources in their environment dry up during an extreme, prolonged drought
A population of rattlesnake goes extinct as the water resources in their environment dry up during an extreme, prolonged drought

A population of frogs develop greener skin after a hurricane blows away the white flowers in the environment
A population of frogs develop greener skin after a hurricane blows away the white flowers in the environment

A population of artic foxes develop a brown fur color as warmer temperatures reduce the number of days of snowfall in the area
A population of artic foxes develop a brown fur color as warmer temperatures reduce the number of days of snowfall in the area

A population of deer show an increase in antler size over time, which allows them to obtain more mates during mating season

Answer 1

The observation that would best support the idea that increased competition causes changes in a species is:

**A population of deer show an increase in antler size over time, which allows them to obtain more mates during mating season.**

This observation indicates that competition (in this case, for mates) drives a change (increase in antler size) within the population, aligning well with Darwin's ideas of natural selection and descent with modification.