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Amiraneli [1.4K]
3 years ago
8

4. What is the purpose for an electrophoresis buffer? 2pts.

Biology
1 answer:
dolphi86 [110]3 years ago
4 0

Answer:

"Buffers in gel electrophoresis are used to provide ions that carry a current and to maintain the pH at a relatively constant value. These buffers have plenty of ions in them, which is necessary for the passage of electricity through them."says Google.

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The map shows the main streams and the rivers near City A and City B, as well as the nearby factories and farmland. The arrows i
AveGali [126]

Answer:

A. City A because there are no pollution sources upstream.

Explanation:

Water pollution is th contamination of water. There are many means through which water is contaminated such as industrial waste, agricultural waste and domestic waste et-cetra.

City A and City B get water from sunset lake and moth lake which have factories (industrial waste) and farmland (agricultural waste) nearby them, which are responsible for the contamination of river water. due to this cities can recieve contaminated water which can affect their health.

But the quality of water in City A will be best than that of City B because according to the image, City A do not have nay upstream soooooource of pollution, as factories and farmland are located at downstream.

Hence, the correct option is A.

8 0
3 years ago
The table below shows the average annual precipitation over a period of five years in three locations of
Rainbow [258]

Answer:

Its people would leave and migrate to other locations

Explanation:

Those areas where amount of precipitation having less than 8 inches, these areas are the arid regions. In these areas, water is present in very low amount which is not sufficient for the needs of high population. Minimum agricultural should be done because planting and growing of crops need a lot of water so most of the people migrate to other regions where water is present in large amount.

3 0
3 years ago
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Which of the following is a type of volcano? 1. Dome 2. Flat 3. Block 4. Cinder
Sedaia [141]
4. Cinder cones are a volcano
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What is meant by the uterus ............ for those who feel a girl please answer ...... ° _ ^​
Nimfa-mama [501]

Answer:

The uterus is an organ used for producing offspring.

Explanation:

It’s also called a womb, offspring develop within it until they are ready to be born.

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How does glucose oxidation release chemical energy?​
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