Biology, 08.10.2020 02:01 ohartshorn1599
Chlorofluorocarbon (CFC) have been used in refrigeration for decades. They have low boiling points, nonflammable, chemically stable, and odorless. These properties make CFCs ideal for refrigeration. The problem is CFC compounds have been determined to break apart ozone in the stratosphere, allowing more UV radiation to reach the surface. Alternatives have been developed to help take the place of these CFCs such as HCFCs and HFCs. What property of HCFCs and HFCs make them viable alternatives to CFCs? A) they have shorter lifetimes B) they do not destroy any ozone C) less expensive to produce than CFCs D) they possibly contribute to global warming
Answers: 1
Biology, 22.06.2019 08:30
Which component in a graph indicates an independent factor? a. y-axis b. x-axis c. scale
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Biology, 22.06.2019 09:00
Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous
Answers: 3
Biology, 22.06.2019 12:40
In a cladogram, what occurs at a node? a derived trait appears. evolution is stopped. an ancestor dies. the cladogram ends. aa as s as ss what are the chances that their offspring will have sickle cell anemia? 0% 25% 50% 100%
Answers: 3
Chlorofluorocarbon (CFC) have been used in refrigeration for decades. They have low boiling points,...
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