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RSB [31]
2 years ago
9

A biologist used the Internet to contact scientists around the world to obtain information about declining amphibian populations

. He was able to gather data on 936 populations of amphibians, consisting of 157 species from 37 countries. Results showed that the overall numbers of amphibians dropped 15% a year from 1960 to 1966 and continued to decline about 2% a year through 1997. What is the importance of collecting an extensive amount of data such as this?
Biology
1 answer:
Tasya [4]2 years ago
7 0

Answer:

The more the data collected the better the understanding of the extent of the problem.

Explanation:

In this case here, when more data are collected it makes it easier for the biologist to understand the cause and extent of the problem

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Answer:

a

Explanation:

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A moraine is a landform feature which is formed by the glacier retreating. The ridge of sediments that geologists found has a feature namely moraine.

<h3>What is moraine?</h3>

The materials usually soil or rocks left behind by the glaciers are called moraine.

Just like rivers that carries all sorts of debris and silt and eventually builds up to form deltas, similarly glaciers moves all sorts of dirt and boulders that assembles to form moraines.

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Thus, the correct answer is C.

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8 0
2 years ago
You dilute your bacteriophage for plating 10^-6. You mix 0.1ml of the bacteriophage dilution with 0.3ml of bacteria and plate wi
Blizzard [7]

Answer:

46 * 10^7 pfu/ml

Explanation:

Given -

Bacteriophage dilution = 0.1 ml

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Final concentration of phage stock is equal to

= \frac{pfu}{d*v}

Where pfu is the count of plaques

d is the dilution and v is the volume

Substituting the given values, we get -

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a

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