Explain why critics did not readily accept the Darwin-Wallace theory of natural selection. What will be an ideal response?
Although Darwin and Wallace presented a well thought-out idea with good observational
support, critics noted that any less-than-perfect structure would be useless. Critics
presupposed that existing structures were always used exactly as they are now, which is not
necessarily true.
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An infant gains 10 pounds. Why would you consider this to be an example of a chemical change?
What will be an ideal response?
The orientation of glacial striations was one piece of evidence supporting continental drift
a. True b. False
Spreading centers on continental plates ____.?
a. ?spread much faster than spreading centers on oceanic plates and create rift zones b. ?spread much slower than spreading centers on oceanic plates and create rift zones c. ?are identical to spreading centers on oceanic plates d. ?spread much faster than spreading centers on oceanic plates but do not create rift zones e. ?spread much slower than spreading centers on oceanic plates but do not create rift zones
Which of the following is likely to be true about the right volcanic feature compared to the left one in this figure?
A. The magma has fewer silicate chains. B. The magma probably formed at a higher temperature. C. The magma has a lower viscosity. D. All of these choices are correct.