Biology, 25.05.2021 05:00 abbygriffin8575

How long would it take for 5g of carbon 14 to turn into nitrogen 14?

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Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .

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Biology, 22.06.2019 03:00, babbybronx

Johnny rode his bike to a friend's house 4 blocks down the street in his neighborhood. he immediately rode back home once he realized his friend was not able to play. what was his displacement for the total bike ride? how did you determine this? what could we use as a reference point to determine he was in motion during his bike ride? why can you use it as a reference point

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Biology, 22.06.2019 10:30, Fireburntbudder

What is the main reason that attitudes are more often revealed in spoken rather than written language? a. in writing, we try to put the "best face" on what we write. b. we speak far more often than we write. c. in writing, we can more easily conceal our attitudes. d. in spoken language, we are often careless in our use of words.

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Biology, 22.06.2019 22:30, babyrocks7300

What is a food chain? a. different animals located in different communities b. energy transferred from the sun to plants and then to a series of living things c. rows of crops, such as lettuce, in a field d. animals using one another as food for energy and growth