PCB (Poly-Chlorinated Biphenyls) are the major contaminants of groundwater that must be removed before circulating water among people. PCBs can also enter the food chain by contaminating aquatic organisms. Working on PCBs and removing it from water is a challenging process. Various processes are involved in removal of these contaminants from the groundwater. Among these one is the use of microorganisms. Microbial process is a potent bioremediating method.
DEGRADATION OF PCBs through microorganisms is an effective process as PCBs are susceptible to degradation. PCBs are transformed into smaller parts by microorganisms that make them more soluble and easily degradable.
Answer:II) Deforestation and suburbanization reduce an area's net primary productivity.
III) Increasing atmospheric concentrations of carbon dioxide could alter Earth's climate.
IV) By using fossil fuels we are destroying a nonrenewable resource.
Explanation:
The global carbon cycle can be defined as the cycle of carbon in which the carbon is transformed and changed into forms while transferring to atmosphere, land, ocean and in the form of fossil fuels.
The deforestation and suburbanization processes will likely to affect the contribution of the plant in the net primary productivity generate due to photosynthesis process that involves the production of carbon products in the form of glucose by atmospheric carbon dioxide.
The increase in atmospheric concentration of carbon dioxide through the burning of fossil fuels is likely to warm the earth climate. The burning of fossil fuel is likely to increase the abundance of carbon dioxide in the air.
The fossil fuels are the source of non-renewable resource utilized for the purpose of generation of thermal energy. These resources once consumed will not get replenished thus this will reduce the carbon level produced due to burning of fossil fuels in the future.
Answer:
it is the vector b hope this helps
Explanation:
<span>Endoskeletons are bony forms on the inside of the body of an organism. In these cases, fish scales and bones on a human are inside the skin. These would be endoskeletal in nature. Echinoderms with plates and arthropods with appendages would be examples of exoskeletons.</span>