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Free_Kalibri [48]
3 years ago
13

Discuss two ways that radiometric dating can be used to establish the age of a fossil.

Biology
1 answer:
Crazy boy [7]3 years ago
8 0
Direct testing of the fossil material itself or materials associated with it, and indirect testing of material in stratigraphic contexts that bookend the fossil (i.e. a lava flow over the top of the layer a fossil is contained in).
i hope it help
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These electrons for the ETC chains, generates the PMF for pumping H+ as protrons into the thylakoid  intramembranes.

Outer membrane covers  the intramembrane space, between these two membranes layers. The protons in the intramembrane space generate the electrochemical gradient for the supply of  the energy used by ATPase synthase for ATP synthesis from phosphorylation with ADP.

The chloroplast is made up of both the outer and inner membrane,separated by the intramembrane space. The walls of the intramembrane space is guided by the outer envelope. 

Therefore with the outer envelope removed, the intramembrane is exposed,more protons(H+) are released, but can not be held in the outer envelope to form electrochemical gradients,beacause the intramembrane space is now permable.

Thus   the rate of reduction of DCPIP is faster.The  color changes to colorless increases when reduced , from blue color.

Explanation:

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