What is a plants epidermis? what is its function

What does it mean for a cell membrane to be selectively permable

The ancestors of plants that lived in water had plenty of water for the young. angiosperms are a group of land plants that evolved a reproductive trait for living on land. this trait protect young plants by allowing them to grow only when water is present and the conditions for healthy development are right. what trait most likely young angiosperms in this way?

Animals that have thick fur and ae able to store large amounts of body fat live where ?