What factor has been most crucial to the survival of the relatively few remaining indigenous people of Latin America?
A) water
B) land
C) energy
D) jobs
E) education
B) land
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Geographic isolation and reproductive isolation can both lead to speciation
Indicate whether the statement is true or false
Which of the following best matches the description?Substances that endanger life if encountered.
A. RCRA B. National Priority List C. LD50 D. waste minimization E. Superfund F. CERCLA G. reactivity H. acute toxicity I. ignitability J. threshold levels K. hazardous wastes L. chronic toxicity M. synergism N. corrosiveness O. toxicity
Where in the world are the areas of the most severe water stress?
What will be an ideal response?
An active remote sensing system that uses reflections from emitted sound waves to probe ocean depths is called ____
Fill in the blank(s) with correct word