Select the correct answer from each drop-down menu.
complete the sentences about earth’s early biosphere.
1st dropdown:
a. combustion
b. oxidation
c. respiration
2nd dropdown:
a. organisms
b. carbon dioxide
c. sunlight

What protects the lining of the stomach from acidic gastric juices?

What do nitrifying bacteria convert

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?