Which situation could represent kin selection in action?
A) You help your friend learn linguistics, and your friend helps you learn biology.
B) You help your brother pay for his children's college tuition, even though he may not be able to pay you back.
C) You help your mother pay her property taxes when she gets old.
D) You inexplicably forget to use birth control, and a child results.
Answer: B
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A. heterospory. B. free water external to the plant. C. high temperatures. D. solar energy. E. insect pollination.
While going for an autumn hike in the forest, you see some trees with green leaves and others with red, yellow, and orange colored leaves. What explains the difference in the leaf color in autumn?
What will be an ideal response?
The method of movement that requires the
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Most CO2 is transported to the lungs in which of the following ways?
A) dissolved in the plasma B) as carbonic acid C) bound to water D) attached to hemoglobin or as bicarbonate ions