Answer:
Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements; chiefly hydrogen, sulfur, oxygen, and nitrogen. Hope this helps.
I THINK its D I am NOT positive but I hope it helps, again I am not sure.
Answer: well i think he cant use it while its scanning because it needs to scan fully. he can use the knob after the scan to see if everything is correctly scanned. but the final answer in my opinion is no.
Explanation:
Answer:
las enzimas son proteínas y aceleran reacciones químicas.