Earth's biodiversity remains a reservoir for ________. A) ...

[jayhills49]

Earth's biodiversity remains a reservoir for ________.
 
  A) water and waste production by humans
  B) pests and disease
  C) habitat extinction and species destruction
  D) foods and medicines
  E) oil and coal

Question 2

When examining the Keeling Curve in the accompanying graph, one notices a zigzag upward-moving curve. What do these small up and down movements indicate?
 
  A) weather-related factors affecting CO2
  B) seasonal cycles in CO2 concentrations
  C) O2 versus CO2 concentrations
  D) latitudinal differences in CO2 concentrations
  E) uncertainty in the CO2 conditions

[britb2u]

Answer to Question 1

D

Answer to Question 2

B