Biology, 30.09.2019 04:00 pbarbee3034
The concentration of carbon dioxide in the atmosphere in 1958 was 310 ppm and rose to 390 ppm in 2009. the percent increase in carbon dioxide over this period of time is closest to:
Answers: 1
Biology, 22.06.2019 03:30
Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Biology, 22.06.2019 07:00
An ecologist studied the same species of deer during the summer and the winter. she noticed that during the summer, when there was plenty of food, the deer were energetic and playful. however, during winter when food was scarce, the deer moved more slowly and did not run unless they needed to escape a predator. which scientific fact is best supported by her observations?
Answers: 3
The concentration of carbon dioxide in the atmosphere in 1958 was 310 ppm and rose to 390 ppm in 200...
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