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4 years ago

The technique called radiometric dating is based on

Geography

1 answer:

Dima020 [189]4 years ago

3 0

Answer:

D) the steady, clocklike decay of certain radioactive isotopes over time.

Explanation:

Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks.

For example, when rocks are formed, such as igneous rocks (formed when molten rocks cools), certain radioactive atoms are trapped inside the rocks during this formation process. Then these radioactive atoms decay over time.

The age of the rock can be estimated by comparing the occurring radioactive isotope within the material to the abundance of its decay products, which form at a known constant rate of decay.

From the options;

A) this is about the formation of the radioactive molecules and not about radiometric dating

B) this is radiocarbon dating (cabon dating/carbon-14 dating)

C) the assumption is wrong since the radioactive isotopes decays not accumulate.

D) the corect option as I explained earlier.

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Question 58 a through f.

Effectus [21]

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3 years ago

Which hormone causes the kidneys to conserve water?

solong [7]

C) ADH

ADH (Antidiuretic Hormone) The brain and kidneys regulate the amount of water excreted by the body. When the blood volume is low, the concentration of solutes in the blood is high. When the hypothalamus senses this low blood volume and increased serum osmolality it synthesizes ADH, a small peptide molecule.

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3 years ago

Where do most Africans live

LenaWriter [7]

Answer:

Nigeria

Explanation:

population of : 183,523,432.

More than south Africa.

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4 years ago

If place A lies at the height of 2500 meters above the sea level and its surface temperature is 20 degree celcious, estimate the

Alchen [17]

Answer:

14°C

Explanation:

Place A = 2500 m = 20°C

Place B = 1500 m = ? °C

First of all, we know that the air temperature decreases with 6°C at every 1000 m.

So, now it is easy to find the temperature from place B.

If in place A, at 2500 m is 20°C, then at place B the temperature will be with 6°C lower.

Place B = 20°C - 6°C = 14°C

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3 years ago

Humans are born with free will

Leokris [45]

Answer:

Correct answer is D: natural law.

Explanation:

D is correct answer as it is an idea that spread during the period of Enlightenment. It was used by John Locke, but also later by Thomas Jefferson.

A and B are not correct as this are forms of government inside which certain group of individuals controls everything.

C is not correct as limited government is also a form of political system.

3 0

3 years ago