The fruits of plants primarily function in
A. providing food for animals.
B. seed protection.
C. both protecting and dispersing seeds.
D. seed dispersal.
E. both feeding animals and protecting seeds.
Answer: C. both protecting and dispersing seeds.
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During a human pregnancy, implantation occurs at the blastocyst stage
1.True 2.False
Given that mass loss is expressed as a negative exponential function (original mass remaining = e-kt), how much mass would be left after 20 weeks given a decomposition coefficient k = 0.0167 in units of proportion mass loss per week?
A) 0.203 B) 0.716 C) 0.916 D) 1.390
Matter is composed of:
A. molecules B. atoms C. mass D. energy
Over the past two centuries, how has the growth of human population changed?
A) It has leveled off slowly. B) It has increased steadily. C) It has exhibited "boom and bust" growth. D) It has increased exponentially.