What compound is the primary structural constituent of plant tissue, forming the cell walls of stems, leaves, and roots?
A) chlorophyll B) starch C) protein D) enzymes E) cellulose
Answer: E
You might also like to view...
Judge the following sentence according to the criteria given below: Land conversion from forests to
cropland results in an increase in biological carbon storage capacity BECAUSE the annual planting and harvesting of crops involves far more biomass than mature forests. a. The assertion and reason are both correct, and the reason is valid. b. The assertion and reason are both correct, and the reason is invalid. c. The assertion is correct and the reason is incorrect. d. The assertion is incorrect and the reason is correct. e. Both the assertion and the reason are incorrect
The latitude of highest mean annual surface temperature, the heat equator, is located about ______ degrees north of the geographical equator.
a. 5 b. 10 c. 15 d. 20
Unconsolidated, granular materials such as gravel and sand will support maximum slope angles of about 33 to 35 degrees. What is the name for this maximum slope angle?
What will be an ideal response?
What is a key "take-home message" about Easter Island?
A) Making and placing large stone statues is a waste of time. B) The invasive brown tree snake can wipe out an entire population of humans in a short amount of time. C) Tropical soils are insufficient for growing enough crops for a population to be self-sustaining. D) Humans that live in tropical areas will not die of exposure to extremely low temperatures. E) An island population must live as responsible stewards of its resources.