Answer:
The blank would be River
Explanation:
"River deltas are important in human civilization, as they are major agricultural production centers and population centers. They can provide coastline defense and can impact drinking water supply. They are also ecologically important, with different species' assemblages depending on their landscape position."
Hope this helps
The transformation of agricultural products (raw ingredients) into food, or a form of food into another form
a solar eclipse, when the moons shadow comes between the sun and earth
