Phemolphthalein changes colour.(i forgot from which to which) This is because calcium hydrroxide is basic.
The answer is a. mesosphere
Earth’s atmosphere is divided into 5 layer, from the outer layer it will be: Exosphere, Thermosphere, Mesosphere, Stratosphere, Troposphere. The coldest area of the atmosphere would be the middle layer called mesosphere. The average temperature of this atmosphere is −85 °C , a bit lower than stratosphere temperature −60 °C.
You would have to try on order to hurt yourself. Assuming you did the proper procedures Before and the specimen is fully in sight on the x and y axis and height is the only other thing to look at, then grab the fine adjustment knob ( the smaller coarse adjustment knob), and move it to the desired height. If the specimen starts to get blurry, turn the other way. This is a lot easier if your hand doesn’t move a lot when being held still
<span>B. areas of high population density will have greater needs and deplete resources available</span>
<span>Have you seen that pollution is caused by pesticides and fertilizers? Which cause an in balance... So it's true.</span>
