Answer:
I would go with A. Salinity and Temperature
Answer:
Making farm land (agriculture), terraforming (so we can build homes etc.)
Signed aggreements of trade
Canal irrigation is when people use canals to transport water to places that need to be supplied with water.
Answer:
i would say C because draining systems are very common and very efficient during a hurricane or a flood
Explanation:
if this is wrong im sorry
hope this helps
have a happy holiday :)