The Fact That There Are Seasons on Earth Is Largely

question 13

Multiple Choice

The fact that there are seasons on Earth is largely due to

• A)the tilt of Earth's axis.
• B)the changing distance of Earth from the Sun during its orbit.
• C)the precession of Earth's axis of rotation.
• D)the Coriolis effect.

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Definitions:

Keystone Species

Keystone species are species that have a disproportionately large effect on their community or ecosystem relative to their abundance, playing a critical role in maintaining the structure of an ecological community.

Community

In ecology, a community is a group of interacting species living in the same area, sharing a common environment.

Small Numbers

A numerical quantity categorized as being less than some arbitrary value, often context-specific.

Keystone Species

A species that plays a critical role in maintaining the structure of an ecological community, affecting many other organisms in the ecosystem.