HELP!! this isnt biology it's earth science.

Based on the physical properties of seawater, write the letters of the water samples below in order of increasing depth, from shallowest to deepest. Explain the reasoning used for the sample order chosen.

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?