Answer:
In troposphere air temperature decreases with increase in altitude.
Explanation:
When the sun rays hit the surface of earth it absorbs the energy of sunlight and after some time the heated surface of earth emits heat which increases the temperature in the lower regions of the troposphere while the top layer of the troposphere is cooler than the regions below hence the variation.
The answer is A. DNA is the genetic code that eventually gets transcribed into RNA and that RNA is then translated into protein chains (polypeptides). Thus the ultimate purpose of DNA is to build these proteins.
B is wrong because while DNA itself exists in a double helix, its main function is not to build other double helix models. In fact, RNA exists in single helix form.
C is wrong because the brain does not construct the body.
D is wrong because DNA is just a body of information, and not a historical record.
It was a quarter of billion years ago and the world nearly came to an end. there was dinosaurs and the greens that they used to eat and today a dino's head is sculptured on a high cliff.
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The answer would be crystals
