Which of the following is not a problem associated with urban sprawl?
a. blocking high views
b. destroying animal habitats
c. overrunning farmland
d. reducing green space

The blank theory suggests that the sun, planets, and other celestial bodies of the solar system came from a cloud of dust and gas? a.) condensationb.) steady state c.) big bang d.) nebular

In the following diagram, four different index fossils are labeled: which of the labeled fossils comes from the oldest organism? a b c d

What is the amount of organic matter in all living organisms in a habitat called?