What is used to help crops grow that involves using groundwater or run off through canals?

Aqueducts were used

Explanation: Aqueducts use runoff ground water to help irrigate and water crops. Canals also recieve water from aqueducts.

the answer is: must pay taxes on profits

since it is considered as a part of your income, profits from investments is eligible for tax payment.

the tax from your investment could be influenced by how long you decided to sell it. united states promotes keeping your investment for long term period. so, the tax rate for investments that you sell in less than one year is typically higher compared to investments that you sell in more than one year period.

where is the picture of the graph or table?