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
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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.
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
Explain the formation of sand dunes
What will be an ideal response?
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