Briefly describe the layers of the atmosphere:Troposphere-Exosphere-St ratosphere-Mesosphere-Thermosphere-

Explanation:

-Troposphere. It is the lowest layer and encompasses the Earth's surface up to an average height of 12 kilometers; about 17 kilometers in the equatorial regions and about 9 kilometers at poles

- Stratosphere.Separated from the troposphere by the tropopause is this layer containing 19 percent of the atmospheric gases, but very little amount of water vapour.

-Mesosphere. It is located above the stratosphere up to a height of 80-85 kilometers in the mid-latitudes, where the mesopause is located.

-Thermosphere. From the upper limit of the mesopause extends the thermosphere, known as the upper atmosphere.

-Exosfera. It is the last layer, the outerest until connected with the solar wind.

the dna molecules have a negative charge because of the phosphate groups in their sugar-phosphate backbone, so they start moving through the matrix of the gel towards the positive pole. power is turned on and dna fragments migrate through gel (towards the positive electrode).

explanation: