Biology, 30.07.2021 14:00 kaylijocombs
The Montreal Protocol limited the world’s use of chemicals like Chlorofluorocarbons (CFCs). Which sentence best indicates that the Montreal Protocol led to improvements in the thickness of the ozone layer? When ozone was first measured by satellite in 1979, the average concentration above Antarctica was 225 Dobson units (DU). In 1989, when the Montreal Protocol took effect, it was 127 DU. The lowest level was 92 DU in 1994.By 2019, the value was back up to 167 DU. Excerpt courtesy of NASA
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Biology, 22.06.2019 02:00
The pharynx is the structure in the body that serves as a pathway of both air and food. how does the body make sure that food does not get into the lungs? the salivary glands secrete enzymes that pull food out of the air pathway. the small intestine pushes the air out of the digestive system. the pancreas breaks down food in the air pathway. the epiglottis closes the air pathway so that food will not enter it.
Answers: 1
Biology, 22.06.2019 02:30
Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only
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Biology, 22.06.2019 05:00
According to this food web which of the following would be considered primary consumers
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Biology, 22.06.2019 08:30
Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin
Answers: 1
The Montreal Protocol limited the world’s use of chemicals like Chlorofluorocarbons (CFCs). Which se...
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