Answer and Explanation: This is true that theories do change or get replaced overtime. We all know that in any scientific investigation the scientist put forth the theories which are basically the ideas explaining something particular. We also know that the world is experiencing constant changes and those changes could be of Technology or of overall world order so, whenever a scientist gives us the theory, that theory is made according to the situations and environment of that particular time and in future with the passage of time and with the advancement of Technology and other variables, scientist do need to re-evaluate theories. They either make some positive changes keeping in view the changing circumstances of the current situation or discard the theory altogether depending on its nature. The name research itself indicate that scientists research the already searched idea and in that way the New theory which comes after the modification of old theory or altogether the new theory takes place of the old one.
IN the troposhere the temperature generally decreases with altitude. The reason why the temperature decreases in altitude is that the troposhere's gases absorb very little of the incoming solar radiation. Instead, the ground absorbs this radiation and then heats the tropospheric air by conduction and convection. This causes the temperatures in the lower troposhere to be warmer.
The answer to this question would be: d) flushing<span>
Niacin or nicotinic acid is also known as vitamin B3. Niacin has a role in lipid metabolism and consuming a high dose of niacin can lower LDL, lower triglyceride and increase HDL. Therefore, niacin can be used to improve lipid profile. The symptomps of toxicity should be flushing or hepatotoxicity.</span>
Answer:
c/ four times
Explanation:
the sound wave travels over four times faster than it would in air
Answer: Uranium mining does not cause air pollution.
Explanation:
