Scientists estimate that the composition of Earth’s atmosphere has changed over time. Which of the following most likely caused Earth’s atmosphere to support diverse life-forms?
A: the drift of continents
B: a transfer of gases from the Sun
C: changes in Earth’s magnetic field
D: oxygen-producing organisms

An example of what is geese flying south for the

The process by which natural forces move weathered rock and soil brim one place to another is called

Which of the following statements most accurately describes convergent evolution? the process in which two similar species evolve separately from each other and share similar characteristics the process in which a single species evolves into two or more new species the process in which two entirely different species evolve in response to each other the process in which two different species evolve separately from each other but still share similar characteristics