Organisms that obtain nutrients by breaking down dead and decaying plants and animals are called * 1. autotrophs
2. producers
3. decomposers
4. omnivores

The image shows embryos of three vertebrate classes

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

What do all of the above organisms have in common