Answer:
climate change, deforestation, and environmental pollution pose a serious threat its future. Solar solutions to energy use, habitat restoration, and clean water systems are just some of the issues covered by Aid for Africa members.
A warm front<span> is where a </span>warm air mass is pushing into a colder air mass, <span>https://www.windows2universe.org/earth/Atmosphere/tstorm/warm_front.html.
</span>QUICK ANSWER<span>A warm front occurs when a cold air mass retreats and is replaced by a warm air mass. Warm fronts typically bring some form of precipitation to the area.<span>CONTINUE READING</span></span>
<u>Answer:</u>
<em>Anytime observations need to be clarified. When an unusual condition need to be shown for later reference.</em>
<u>Explanation:</u>
Instead of just recording the data the is sometimes important to be sketched out as the data observed is needed to be clarified and also sometimes there is an unusual condition that occurs and hence, it is important to sketch it so that it can be used for later reference.
<em>Therefore, when we are aware of the situation we need not sketch the data.</em>
The crust is the part you walk on, and it's the surface of the earth.