Consider the southeast coast of North America and the nothwest coast of Africa. According to the current theory of plate tectonics, these two regions were once very close together. However, the coasts do not quite fit together like puzzle pieces, as one might
expect. This can be explained by the fact that the southeast edge of North America's
actually does fit nicely with
the northwest edge of Africa's
even if the coasts do not

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.

Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.