How do organisms generate energy when oxygen is ot available

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

Does the sun release radiant energy?

Anton created a chart listing different types of materials. which best complete the chart?