I think the answer is B. Hope this helps.
Answer:
the first one is the right answer
The answer is 7
If you substitute -7 into x you get
4-(-3) which is also 4+3
Answer:
chlorine
Explanation:
Chlorinated water safe to drink as it removes away all the types of harmful microorganism rendering it a germ free. Its used as disinfectant also.
Food quantity, reproduction rate, health, etc.