For the bay checkerspot butterfly, a poor flyer, to recolonize small patch habitats, the new habitats must be ____
a. high quality
b. low quality
c. close to a source population
d. far from a source population
e. above a certain number of individuals
ANSWER: d
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The fossil Lucy (Australopithecus afarensis) is significant because, at _____ years old, hers is the first species to _____
A. 20 million; have been fully bipedal B. 1.3 million; have hominin brow ridges C. 3.2 million years; be fully bipedal D. 1.3 million; migrate out of Africa E. 600,000; have homin brow ridges
Which of the following carbon reservoirs contains the most carbon?
a. atmosphere b. biomass on land c. lakes d. oceans e. soil
Temperature at which a solid state changes to a liquid state
What will be an ideal response?
If you have ever had a chance to witness a childbirth, then you know it is an amazing event. However, even after the baby has been removed from the mother, her work is not complete in terms of labor. Why?
What will be an ideal response?