Which of the following is NOT a major type of marine ecosystem? a estuary
C. surface zone
b. intertidal area
d polar ice

Select the correct answer from each drop-down menu proteins are

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?

Identify two examples of chemical reactions that you have encountered during the last week. identify an exothermic and endothermic reaction. explain.