I think the answer may be water pollution.
water pollution > Water pollution<span> is the contamination of </span>water<span> bodies (e.g. lakes, rivers, oceans, aquifers and groundwater). This form of environmental degradation occurs when </span>pollutants<span> are directly or indirectly discharged into </span>water<span> bodies without adequate treatment to remove harmful compounds.
source: Wikipedia </span>
1.) The first had too much emotion it was hard to concentrate on the words. The second had controlled emotion which allowed you to understand the text easier.
2.) He looked at the camera while delivering his soliloquy.
3.) Answers may vary.
I think these are the answers:
A) My father doesn’t like dancing but I like dancing.
B) He failed his exam although he studied hard.
C) I didn’t attend my class yesterday because I was sick.
D) The phone rang while I was taking my online class.
E) We explore the internet so that we can learn many new things.