Choosing Index Fossils Diagram of 4 outcrops. Organism A is a spiral shaped shell, organism B is a trilobyte, organism C is a fan shaped shell, organism D is a tube shaped shell. Outcrop 1: bottom layer shows organism B; second layer shows organisms C and B; third layer shows organism A; top layer is empty. Outcrop 2: bottom layer shows organism C; second layer shows organisms B and C; third layer shows organisms A and C; top layer shows organism C. Outcrop 3: bottom layer is empty; second layer shows organisms B and C; third layer shows organism A; top layer shows organism B. Outcrop 4: bottom layer shows organism B; second layer shows organism C; third layer shows organisms A and B; top layer shows organism D. Answer the questions about the diagram. Organism appears in the least outcrops. Organisms are the oldest. Organism would make the best index fossil.
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Biology, 22.06.2019 01:10
Which of the following is a difference between active transport and facilitated diffusion? view available hint(s)which of the following is a difference between active transport and facilitated diffusion? facilitated diffusion can move solutes against a concentration gradient, and active transport cannot.active transport involves transport proteins, and facilitated diffusion does not.facilitated diffusion involves transport proteins, and active transport does not.active transport requires the expenditure of cellular energy, and facilitated diffusion does not.
Answers: 1
Biology, 22.06.2019 07:50
Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers
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Biology, 22.06.2019 08:50
What processes take place before the mature mrna exits the nucleus?
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Biology, 22.06.2019 09:00
Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm
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Choosing Index Fossils Diagram of 4 outcrops. Organism A is a spiral shaped shell, organism B is a t...
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