Ascientist at the polar ice cap was studying an ice sample from hundreds of meters below the surface. while examining the ice, the scientist found some cells from many years ago. using an electron microscope, the scientist identified these cell structures: a cytoskeleton, mitochondrion, nucleus, cell wall, and ribosomes. what kind of organism did the scientist find?
question 18 options:
animal
bacteria
plant
he did not have enough information.
Answers: 3
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Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .
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Waianapanapa beach in hawaii is a black-sand beach that was formed by waves crashing against volcanic rock. the sand can be very hot on sunny days. which statement best explains why? o a. the black sand has no heat capacity. b. the black sand absorbs no radiation. o c. the black sand is immune to insolation. d. the black sand has a low albedo.
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Which substance contains thylakoids? a) nadph b)atp c)stroma d)chloroplast
Answers: 2
Ascientist at the polar ice cap was studying an ice sample from hundreds of meters below the surface...
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