water that travels across land may pick up substance and become contaminates.
Organic: c12h22o11 c3n2h4 chf c1o3
b. lake
c. salt marsh
d. upstream part of a river
(PLEASE HELP)
B. Both Technicians A and B wrong answer
C. Technician A only
D. Neither Technician A nor B
p.s "both"is wrong
Answer:
C. Only tech A is correct
Explanation:
Oil control rings are designed differently than compression rings. A typical oil control ring consists of three separate pieces: two very thin metal rings called scrapers, and a spacer ring called an expander placed in the groove between them.
A. claim to be a professor
B. add a comparison group
C. increase the size of each group
D. think critically about your results
Increase the size of each group
Answer:
*i think it's....
D. think critically about your results
hope this help :)