Adaptation: Question 7
Which BEST explains why a population of a certain species of cactus developed longer spines over time?
Select one:

An animal migrated into the area, and it could only eat short-spined cacti.

A reptile moved into the area, and it could only eat cacti with either very short or very long spines.

A bird migrated into the area, and it could only eat long-spined cactus.

A mammal migrated into the area, and it could only eat cacti with medium-length spines.