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3 years ago

EARTH SCIENCE multiple choice plz help

Biology

2 answers:

Studentka2010 [4]3 years ago

8 0

Answer;

-Carbon-14 decays into nitrogen-14.

-Once a living thing dies, it no longer takes in carbon.

-Carbon-14 dating works for fossils as old as 50,000 years.

Explanation;

-Geologists do not use carbon-based radiometric dating to determine the age of rocks. Carbon dating only works for objects that are younger than about 50,000 years, and most rocks of interest are older than that.

-Carbon dating is used by archaeologists to date trees, plants, and animal remains; as well as human artifacts made from wood and leather; because these items are generally younger than 50,000 years.

-Carbon-14 has a half life of 5730 years, meaning that 5730 years after an organism dies, half of its carbon-14 atoms have decayed to nitrogen atoms.

Paha777 [63]3 years ago

5 0

Answer:

A,C,E

Explanation:

Just took it

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3 years ago

As an instructor for a class that assists individuals to become Master Gardeners, you are charged with answering the questions a

Snezhnost [94]

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3 years ago

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Kobotan [32]

Answer:

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Explanation:

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3 years ago

How does a mouse obtain energy for everyday functions? How might this look different compared to how an own obtains energy?

Gemiola [76]

Answer:

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3 years ago

A certain strain of bacteria divides every 2 hours. If a colony is started with 80 bacteria, then the time t (in hours) required

Mamont248 [21]

Answer:

The time required for the colony to grow two million bacteria is 29.22.

Explanation:

Time required for the colony to grow can be calculated by the following equation:

$t=2log(N/80)/log 2.$

Here t is time, N = 2 million (require bacteria population).

$t=2log(2,000,000/80)/log2$

t ≈ 29.22

Time taken by bacteria to grow is 29.22.

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3 years ago