Question

a longer growing season is a result of ______.
a. an earlier start to spring
b. earlier animal migration
c. species having a narrow temperature range tolerance
d. invasive species

please select the best answer from the choices provided

○ a
○ b
○ c
○ d

Explanation:

To determine the cause of a longer growing season, we analyze each option:

• Option a: An earlier start to spring means plants can start growing sooner, extending the growing season.
• Option b: Earlier animal migration is related to animal behavior, not directly to plant growing seasons.
• Option c: Species with a narrow temperature range tolerance would be less adaptable to changes and not cause a longer growing season.
• Option d: Invasive species impact ecosystems but don't directly cause a longer growing season.

So, an earlier start to spring (option a) is the most logical cause.

Answer:

A. an earlier start to spring