Question

read the passage. then answer the question below.
the forests in oregons cascade mountains include western red cedar and douglas fir, two of the tallest tree species in the world. both of these species can grow to be 100 meters tall, or as tall as a 30 - story building!
several owl species, including long - eared owls, great horned owls, and northern pygmy owls, live in these forests. owls are nocturnal, which means they are most active at night. during the day, they rest high in the tall trees.
which of the following best describes a population in a forest in the cascade mountains?
the douglas fir trees and the long - eared owls
the great horned owls and the northern pygmy owls
the western red cedar trees

Explanation:

To determine a population, we need a group of the same species in a given area. The western red cedar trees are all the same species (western red cedar) in the Cascade mountain forest. The first option combines two different species (tree and owl), and the second combines two different owl species (not the same species). So the western red cedar trees represent a population.

Answer:

the western red cedar trees