Which tool might be used to limit imports from cuba but maintain exports to cuba

Sanctions

Explanation:

Sanctions are often seen as a preliminary measure from governments to restrain a certain country who has not aligned to international treaties or has had diplomatic tensions with them. These do not include leaving a complete treaty without effect but rather aiming at a certain part of that treaty, like restricting imports from a certain country until diplomatic relations normalize. This, however, does not affect exporting businesses, as they are able to regularly send their products to that particular country unless that particular country decides it will also block imports.

i believe

clean air is essential for health and survival

clean air provides nitrogen gas for plant respiration

clean air supplies oxygen that enables living organisms to breathe

hope this

i am brianly

sorry if this doesn't