Teratogens
A. are fatal to humans in low doses.
B. cause birth defects.
C. are harmful largely as allergens.
D. cause mutations.
E. are transmitted genetically.
Answer: B
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Virtual water is water
a. that exists only in deep underground aquifers b. that we hope to be able to draw on in coming years c. that is not directly consumed but is used to provide us with food and other consumer products d. that comes as precipitation in desert areas e. that is predicted to be in runoff from snowfields at high altitudes
A loss of plant biodiversity due to introduced invasive species will likely
A) increase the number of K-strategists. B) increase the biodiversity of herbivore species. C) decrease the amount of energy moving through the food chain. D) increase the number of endemic herbivores in the system.
How have policies such as agrarian reform and frontier colonization impacted the patterns of settlement and primary resource extraction in the region?
What will be an ideal response?
The prevailing westerly winds blow in which of the following directions in the Southern Hemisphere?
A) From northeast to southwest B) From northwest to southeast C) From southeast to northwest D) From southwest to northeast