What happens to ecosystems when a keystone species is lost?

What will be an ideal response?


The overall ecosystem health is decreased.

Environmental & Atmospheric Sciences

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An example of a ________ or nodal region is the Chicago metropolitan region, which shares a variety of economic, political, and other functions

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences

What radioactive material is the main fuel used to produce nuclear energy?

A) Uranium-238 B) Uranium-235 C) Lead-207 D) Thorium-232

Environmental & Atmospheric Sciences

Who made the first clear statement of the law of superposition? When?

A) John Wesley Powell, nineteenth century B) Nicolaus Steno, seventeenth century C) William Smith, eighteenth century D) John Stuart Priestly, nineteenth century

Environmental & Atmospheric Sciences

The process used to demonstrate that two rock strata are equivalent is called

a. equivalency. d. correlation. b. interpolation. e. none of the above. c. extrapolation.

Environmental & Atmospheric Sciences