A physical or biological necessity whose presence in inappropriate amounts limits the normal action of an organism is known as a ____

A) nutrient
B) limiting factor
C) trophic level
D) scarce condition


B

Environmental & Atmospheric Sciences

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____________________ are sometimes used to fasten unstable bedrock to stable strata

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences

The relationship between the moose and wolf populations on Isle Royale reveals

A) intraspecific competition. B) top-down and bottom-up population regulation. C) the high and steady environmental resistance on wolves. D) the high and steady environmental resistance on moose.

Environmental & Atmospheric Sciences

How much of the region experiences average annual rainfall of less than 250 millimeters (10 inches)?

A) 75%
B) 80%
C) 60%
D) 55%
E) 85%

Environmental & Atmospheric Sciences

Which of the following statements best describes how this object may have formed?

A. Material accumulated into a sphere because of gravity, and it underwent nuclear fusion of hydrogen. B. A supernova exploded, probably from the late-stage evolution of a high-mass star. C. A star ejected its outer envelope of gas and plasma. D. Interstellar gas and dust accumulated due to gravity. Some pockets had enough mass to cause star formation.

Environmental & Atmospheric Sciences