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Biology, 21.06.2019 19:10
What have we learned from fossil evidence about evolution? a) it is an abrupt change. b)the process is observable. c) it takes place during one lifetime only. d)the most complex traits are always selected.
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Biology, 21.06.2019 22:30
Check all that apply diatoms are marine algae that have a shell made of silica, what are some of the uses of the silica shell after the diatoms die? 1.the shells make up the diatomaceous earth used in filters 2.it can be used as an ingredient in abrasives 3.they are used in food products 4.the shells can be used in some insulating materials
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Biology, 22.06.2019 06:30
Which statement describes a way in which the digestive and excretory systems work together? a. the nephrons absorb nutrients from food going to the large intestine. b. the excretory system balances blood gases in the small intestine. c. the intestinal villi filter blood and send wastes to the bladder. d. the excretory system balances the salts and water obtained from digested food
Answers: 1
Biology, 22.06.2019 07:20
If your blood becomes too concentrated with iona, what will happen to the red blood cells
Answers: 2
What class of molecules do dna belong to...
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