Identify each process as a carbon source or a carbon sink?

In the controversial scientific process of cloning, organisms are created that are genetically identical to there parent. this process would be classified as

Ausable water source is one that can be used by humans for drinking or agriculture. identify the water reservoirs as usable or unusable based on their current state.

What finding has provided scientific evidence to support life on earth possibly evolved from microbes? a) the curiosity rover discovered warm and wet enviromental conditions on mars similar to earth. b) space probes discoverd evidence of possible extraterrestial life on other planets. c) space satellites provided pictres of prehistoric life on earth d) evidence of human fossils found in rock samples.