When two groups of organisms
independently evolve similar adaptations,
it's called convergent evolution. Sharks and
whales both have streamlined bodies and
| tail flukes. How do we know that these
similarities are because of convergent
evolution? Hint: Whales are tetrapods. Are
sharks?

Hmm this is a hard heterotroph's can't produce its own food. a human can produce it's own food because people kill animals and eat them like squirrel, deer, oak trees need rain which they don't produce the rain, bee's need flowers and pollen and nectar but they don't produce it either, rabbit's don't produce either, because they either steal carrots from your garden and eat leaves.so, the best answer that i would pick is a. humanshope my answer has you and sorry if it doesn't : ) : (

Actually nobody can answer!