Answer:
Renewable resources
Step-by-step explanation:
We use the term nonrenewable resources to describe fuels like coal, gas, or natural oil. Once we use them up, there's no more to be had on the earth!
However, sources of power like the sun and the wind are known as renewable resources, because there's a renewable supply of them. We can grow algae easily. It's an aquatic plant--all we'd need to do is plant more!