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stiv31 [10]
3 years ago
11

How are radioactive isotopes used to date rocks? ...?

Biology
1 answer:
Stolb23 [73]3 years ago
8 0
Some isotopes, however, decay slowly, and several of these are used as geologic clocks. Dating rocks by these radioactive timekeepers is simple in theory, but the laboratory procedures are complex. <span>All methods rely on the fact that certain elements (particularly uranium and potassium) contain a number of different isotopes whose half-life is exactly known and therefore the relative concentrations of these isotopes within a rock or mineral can measure the age.</span>
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What is algae bloom?
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6 0
3 years ago
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Which best explains the effect of reforestation on land?
8090 [49]

Explanation:

Reforestation of agricultural land can improve biodiversity, which can result in increased primary production, reduced susceptibility to invasion by exotic species and increased ecological resistance to pressures such as climate change

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2 years ago
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Please help me with this!!! very quick answers plz
Leviafan [203]

The direction of the reaction.

7 0
3 years ago
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One of the seed banks has been storing seeds of a rare and endangered plant to keep the seeds fresh.120 of the seeds of this pla
lianna [129]

Answer:

25%

Explanation:

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This further means that (120-90) = 30 seeds are infertile and hence, could not germinate. In percentage, this can be represented as:

30/120 × 100

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= 25% of the selected seeds are infertile.

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How do contractile vacuoles help a cell with homeostasis?
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Hi!!

The answer is <span>They regulate water intake and excretion.

Hope this helps!

-Payshence xoxo</span>
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