How has Earth changed during our current era? A. Dinosaurs became the dominant life form on Earth.
B. Dense forests developed.
C. The oceans formed from water vapor in the atmosphere.
D. Earth cooled enough to form solid rock.

Groups of organisms with low biotic potential, such as gray whales, that produce at most one offspring every other year a) are r-selected b) are k-selected c) are not subject to density-dependent limiting factors d) show the initial stages of the extinction process e) have escaped from the processes of natural selection and adaptation

Which of the following are the ingredients that go into the plant and are needed for photosynthesis? select all that apply. 1.) soil 2.) seeds 3.) carbon dioxide 4.) minerals 5.) glucose (sugar) 6.) water 7.) light energy (sunlight) 8.) oxygen 9.) air

Ecology can best be described as the study of what