Aclient with heart failure asks, "why am i taking a ‘water pill when it's my heart that is having a problem

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?