What does the skinny dipper look like?

What are the four basic classes of organic molecules how do they differ structurally and functionally

Explain the significance of the increased cell specialization of the volvocine line

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