Please help me number 21 need ASAP .

Which is an example of a population?

According to the cladogram, which organisms have roundworms as a common ancestor?

The fruit of a certain plant is sweet and fleshy. the seeds of this plant have a seed coat that is fairly tough. the seeds germinate better if they are exposed to acid, or scarification. what is the most likely type of dispersal for this seed? water animal wind