Answer:
The answer is option 1 about 70% of total global carbon is found in oceans.
Explanation:
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Answer:
Why are embryos used in medical research?
Stem cells can be obtained at the early stages of embryo development; these cells are called human embryonic stem cells (hESC). They also could be used in research to develop drugs to treat serious diseases, or to repair organs following a stroke or heart attack.
Erosion of the esophagus.
Answer:
is the movement of substances due to random thermal molecular motion. is the diffusion constant, representative values of which are found in [link]. Osmosis is the transport of water through a semipermeable membrane from a region of high concentration to a region of low concentration.
Explanation:
It is a natural acceptable fast process of cleaning contaminated materials in the environment. It is cost effective in cleaning hazardous wastes compared to other methods.This method can easily be done without disrupting normal activities. Residues for this kind of treatment are usually harmless products.