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 02:30
The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change
Answers: 1
Biology, 22.06.2019 06:30
Zoo geographic regions are characterized by the presence of specific groups of animals these regions are determined by the taxonomic or phylogenetic relationships of animals. the map shows the zoogeographic regions proposed by the naturalist alfred russel wallace in 1876. the similarities of organisms in which two areas numbered above provide the best evidence for common ancestry between the organisms in both locations ?
Answers: 3
Biology, 22.06.2019 09:00
What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.
Answers: 2
Biology, 22.06.2019 09:00
Linda and julia are trying to determine whether their ideas are scientific or pseudoscientific. linda's idea is free of bias. julia's idea gives the same result when tested repeatedly. which statement is correct about linda and julia's idea?
Answers: 1
Chlorofluorocarbon (CFC) have been used in refrigeration for decades. They have low boiling points,...
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