D solar energy because let's say your camping in the wood you won't need to worry about Solar energy because your outside
The study of population is useful because you can see how popular sections of your country or even the world are. You can see where the most dense parts of Cities and countries are to see what kinds of regulations you might have to put in place for say, worldwide pandemics such as the Coco-19 pandemic. It's also useful because you can see why certain area are more popular than others. reaons might include things like mining towns drawing in people from around that area etc etc. The study of population might also be useful if you're trying to establish a busniess and want to start it in a place you know it'ss be successful, such as a higher populated town near you.
The study of population can also be refered t as population demographics or demography.
The spleen plays an important role in the immune system, therefore when the spleen is no longer present the immune system weakens and can cause the affected to become more susceptible to illness/infection. Furthermore, the affects individual will have a harder time fighting the illness/infection than someone with a full immune system.
The best and most correct answer among the choices provided by the question is the fourth choice "this is an example of causation"
Causation<span> is the "causal relationship between conduct and result". That is to say that</span>causation<span> provides a means of connecting conduct with a resulting effect, typically an injury.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
