State whether the following sentences are simple, complex or compound.​

ok

Explanation:

Simple sentences contains on independent clauses ,also called main clause ,that stands alone.

Complex sentences contains an independent clauses plus one or more dependent clause.

Compound Sentences contains two independent clauses joined with the coordinating conjugation and comma .AND IT'S ENGLISH QUESTION NOT OF BIOLOGY.

false because ozone (o3) depletion does not cause global warming, but both of these environmental problems have a common cause: human activities that release pollutants into the atmosphere altering it.

global warming is caused primarily by putting too much carbon dioxide into the atmosphere when coal, oil, and natural gas are burned to generate electricity or to run our cars.

explanation:

the backbone of the dna and rna compound is sugar phosphate.