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Alexxandr [17]
3 years ago
8

Which describes the flow of energy in a food chain?

Biology
1 answer:
Archy [21]3 years ago
8 0
D. because the sun grows the grass the mouse eats the grass and the snake eats the mouse...
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Heat is added to an element causing the atoms to bounce back and forth in the molecule. This is an example of which type of moti
777dan777 [17]

Answer:

B

Explanation:

When atoms bombard each other, they move vigorously hence they vibrate quickly

8 0
3 years ago
Oils are generally ________ at room temperature and are obtained from ________. oils are generally ________ at room temperature
Elodia [21]
Oils are generally liquids at room temperature and are obtained from plants.
Hope this helps you;)
8 0
3 years ago
If 1/8 remains after 21 years, what is the half-life?
vagabundo [1.1K]

Half life formula

The number of unstable nuclei remaining after time t can be determined according to this equation:

N(t) = N(0) * 0.5^(t/T)

where:

N(t) is the remaining quantity of a substance after time t has elapsed.

N(0) is the initial quantity of this substance.

T is the half-life.

It is also possible to determine the remaining quantity of a substance using a few other parameters:

N(t) = N(0) * e^(-t/τ)

N(t) = N(0) * e^(-λt)

τ is the mean lifetime - the average amount of time a nucleus remains intact.

λ is the decay constant (rate of decay).

All three of the parameters characterizing a substance's radioactivity are related in the following way:

T = ln(2)/λ = ln(2)*τ

How to calculate the half life

Determine the initial amount of a substance. For example, N(0) = 2.5 kg.

Determine the final amount of a substance - for instance, N(t) = 2.1 kg.

Measure how long it took for that amount of material to decay. In our experiment, we observed that it took 5 minutes.

Input these values into our half life calculator. It will compute a result for you instantaneously - in this case, the half life is equal to 19.88 minutes.

If you are not certain that our calculator returned the correct result, you can always check it using the half life formula.

8 0
3 years ago
When assessing orientation, the nurse completes the assessment by asking which questions? select all that apply. "can you tell m
Alexxx [7]

<span>Questions like "can you tell me where you are?, what is your name? what day of the week is it?, and what did you eat for breakfast today?" should be included. They are all significant in determining   a patient’s  cognitive status.</span>

5 0
3 years ago
What diagram demonstrates how crossing-over contributes to genetic variety during meiosis?
Vesnalui [34]

Answer:c

Explanation:trust me

6 0
3 years ago
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