Biology, 10.01.2020 03:31 Isabelcastillox1085
The atmospheric concentration of carbon dioxide increased from 278 ppm in 1790 to 383 ppm in 2007. what is the approximate percent increase in carbon dioxide concentration from 1790 to 2007?
a. 38%b. 505c. 92%d. 105%e. 138%
Answers: 3
Biology, 22.06.2019 01:00
The intervention of extraterrestrials has been used to explain the bermuda triangle, a region of the atlantic ocean where ships and planes are frequently lost, leaving no evidence behind. how would this explanation best be characterized?
Answers: 1
Biology, 22.06.2019 09:00
This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.
Answers: 1
Biology, 22.06.2019 11:10
Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water.b. they use chlorophyll and oxygen to make carbon dioxide and water.c. they use sunlight, water, and carbon dioxide to make sugars.d. they use sunlight, water, and oxygen to make chlorophyll.
Answers: 1
Biology, 22.06.2019 12:00
When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?
Answers: 1
The atmospheric concentration of carbon dioxide increased from 278 ppm in 1790 to 383 ppm in 2007. w...
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