What are the three types of chemical bonds

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

Hey me with this one❤❤❤❤ every organism needs food. does a cell also need it? explain very briefly.

Do you think the gene eef1 alpha1 supports cell theory? explain your response.