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Vesna [10]
3 years ago
15

Which would most likely lead to reduced bird populations?

Biology
1 answer:
lord [1]3 years ago
3 0

Answer:

Introduction of non-native species

Explanation:

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Does the oxygen that exits photosynthesis enter as CO2? Explain.
liubo4ka [24]

Answer:

Yes

Explanation:

Plants extract CO2 from the air and also use sunlight and water as the reactants of the process photosynthesis. Photosynthesis then produces Glucose and Oxygen. Oxygen is rid of the plant.

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
4 years ago
Imagine that zika virus has a 1% incidence in the population. A test for the virus has a 3% false positive rate and no false neg
Darina [25.2K]

Answer:

The answer is 97%.

Explanation:

The zika virus' 1% incidence rate in the population has no effect over the probability of the patient being infected or not. If the test has a 3% false positive rate that means that if it is positive, the results have a 97% chance of being true. Therefore the chance that the person who took the test and had a positive result being actually infected is 97%.

I hope this answer helps.

5 0
3 years ago
Read 2 more answers
What information do you need to describe an object's location?
Alenkasestr [34]
You need to know the areas region  and  its landform I guess not sure though
8 0
3 years ago
Match the characteristic of the biome to the type of rainforest
Lady_Fox [76]

Explanation:

Please post a picture of the question, since there is no way to match anything without more information. :)

3 0
3 years ago
Read 2 more answers
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