Question

able to be maintained or used without depleting resources
a waxy fat used for making candles and soap
question 8

Explanation:

The first description "Able to be maintained or used without depleting resources" matches the definition of "Sustainable". The second description "A waxy fat used for making candles and soap" matches the definition of "Tallow".

Answer:

For "Able to be maintained or used without depleting resources": Sustainable.
For "A waxy fat used for making candles and soap": Tallow.