The main idea of the first paragraph of passage 1 is that the presence of a road through a wilderness area choose 1 affects the environment in ways that can be hard to recognize. increases the level of unnatural noise and decreases the level of natural noise. reduces the number of plants that serve as a source of food for wildlife. leaves the area vulnerable to oil spills and other physical damage caused by cars.

Did the universe cool off or get hotter as it expanded after the 'big bang"?

Which of the following does the reading test of the sat ask you to do ?

Spider crabs live in the shallow regions of the ocean floor. algae tend to grow on the surface of spider crabs. the algae provide the crabs protection from predators by camouflaging them. the spider crabs give the algae shelter. what does this description suggest? 1. the algae are parasites of the spider crabs. 2. the algae and the spider crabs have a mutualistic relationship. 3. the spider crabs are commensals, and the algae are parasites. 4. the spider crabs benefit from the algae living on them. 5. the spider crabs are parasites of the algae.