What stroke of an engine makes a spark which ignites the fuel a. compression
b. exhaust
c. power

expansion stroke

Explanation:

the fuel is ignited by the spark produced ny the spark plug and burns.

the language of nature was a manifestation from god as he said "let there be light" and there was light the world began to assume visible, comprehensible form.

what ever we know now think of the old vision of creation we can be sure that with out the speaking of word -without language- we would have no science today with its striking power to illuminate the world.

answer; ewing's sarcoma;