A polymer is a large molecule made up of many ____. The four categories of biological macromolecules are ___, ___, ___, and ___. carbohydrates, proteins,lipids, and nucleic acids, The type of macromolecule that is used primarily as a source of energy is ___.
C.75 of the cell's mass is water
I believe It is A because fissure eruptions are common on large volcanoes and also is built up by many layers of hardened lava, tephra, pumice, and volcanic ash.
The answer is D. it weather more slowly because it is less prone to be carried away by nature. <span />
