Which of these is a protein?
a) table salt
b) sunflower oil
c) collagen

What are chlorofluorocarbons made of

Most of earth’s fresh water is found in oceans and seas stored in glaciers and ice caps groundwater stored beneath the surface found in lakes, rivers, streams, and reservoirs

Ais a landform that is formed at the mouth of a river from the deposition of sediment carried by the river as the water flows.