Answer:
D. Refrigerants
Explanation:
In the United States of America, the agency which was established by US Congress and saddled with the responsibility of overseeing all aspects of pollution, environmental clean up, pesticide use, contamination, and hazardous waste spills is the Environmental Protection Agency (EPA). Also, EPA research solutions, policy development, and enforcement of regulations through the resource Conservation and Recovery Act .
The Clean Air Act Amendments of 1990 prohibit service-related releases of all refrigerants such as R-12 and R-134a. This ban became effective on the 1st of January, 1993.
Refrigerants refers to any chemical substance that undergoes a phase change (liquid and gas) so as to enable the cooling and freezing of materials. They are typically used in air conditioners, refrigerators, water dispensers, etc.
Answer:
The answer to this question is given below in this explanation section.
Explanation:
Knowing how o start a presentation is crucial if you fail to capture the audience attention right of the bat your entire presentation will flop.Few listeners will stick with you to the end and retain what you have told.
That is mildly unpleasant when you are doing an in house presentation in front of your colleagues.But can become utterly embrassing when you are presenting in front of larger audience presentation to prospective customers.
Let you have most of your presentation slides and polished up you dont check and quick and effective power point presentation design tips.Many ideas are broken into bits sized statements for your slides and complemented with visuals.The best way is to appeal and invoke certain emotions with your audience curiosity,surprise fear or good old amusements.
A worm as a multicell organism, but a virus is a single cell.
Answer:
Odd question but okay....
Explanation:
Earth's surface, also known as "Land", has very many biotic(animals) and abiotic factors (plants). There are also a wide variety of land features such as mountain, plains, Hills, etc..
Within these features are small - Large ecosystems we're plants and animals thrive to create a bigger and stronger wildlife.
"Land" is a very simple word that stands for all of the different plants, mammals, ecosystems, aquatic animals and many more ways of life on Land.
I hope this helps...
