Its a compound sentence because they are two independent clauses being joined together by a comma. they can also be joined together by a semicolon or conjunction
Answer:
compare and contrast: likewise
Cause and effect: for this reason
Description: for example
Problem and solution: to solve this
chronological order: first
Explanation:
What i would write if i were u:
A main ethical concern would be animal testing. A lot of people do not like the fact that scientist are experimenting on animals for such a tragic disease. Also how would we know that it works when scientist are only using it on animals when the actual humans are the ones getting cancer everywhere.
The underlined word is used as a direct object.
B. The world of science will benefit greatly from space exploration.