Biology, 06.05.2020 07:29 jazminemartinez3223
"in all areas of the world, groundwater is an important source or drinking water. however, in many areas, the groundwater is being polluted, mainly by nitrates. sometimes the groundwater is so polluted, it is no longer able to be used as drinking water. what is the most likely source of the nitrate pollutants?"
Answers: 1
Biology, 22.06.2019 02:30, melissaschnelting
Below, the levels of organization in a multicellular organism are shown from least to most complex. which level of organization can be described as several different types of tissues working together to perform a common task?
Answers: 1
Biology, 22.06.2019 02:30, Destinywall
Did you know that a single bee would have to go to over 2 million flowers to make a single pound of honey?
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Biology, 22.06.2019 03:00, babygirlqueen5588
Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.
Answers: 2
Biology, 22.06.2019 03:00, makeithappen60
What causes darkening of the skin as melanin production increases
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"in all areas of the world, groundwater is an important source or drinking water. however, in many a...
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