Many of the earth's plant species depend on ____ to pollinate their flowers.

A. small rodents
B. large mammals
C. amphibians
D. insects
E. humans


Answer: D

Environmental & Atmospheric Sciences

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What does a total fertility rate that is less than 2.1 indicate?

A) that a population has no natural growth B) that a population is growing slowly C) that a population is growing quickly D) that a population has reached its peak E) A TFR that is less than 2.1 has no particular significance.

Environmental & Atmospheric Sciences

There are four levels of regional economic integration. What is their order, from lowest to highest level of integration?

A) (1)Customs union; (2)Free trade area; (3)Common market; (4)Economic Union B) (1)Common market; (2)Customs union; (2)Free trade area; (4)Economic Union C) (1)Free trade area; (2)Customs union; (3)Common market; (4)Economic Union D) (1)Free trade area; (2)Customs union; (3)Economic Union; (4)Common market E) (1)Economic Union; (2)Common market; (3)Free trade area; (4)Customs union

Environmental & Atmospheric Sciences

Explain the formation of sand dunes

What will be an ideal response?

Environmental & Atmospheric Sciences

In which of the following sedimentary rocks are you least likely to find a well-preserved fossil?

A. Siltstone B. Fine-grained sandstone C. Coal D. Breccia E. Shale

Environmental & Atmospheric Sciences