If a nonrenewable
resource cannot be returned to the source how can people use it in the future?

recycle

Explanation:

I'm sure in the near future, we will be able to find ways to reuse objects that we couldn't before, especially as the world advances.

They can't

Explanation:

The difference between these two types of resources is that renewable resources can naturally replenish themselves while nonrenewable resources cannot. This means that nonrenewable resources are limited in supply and cannot be used sustainably.

ń, wǒ shuō yīngyǔ, dàn wǒ huì shuō qítā yǔyán, rú xībānyá yǔ fǎyǔ yìdàlì yǔ hé pǔtōnghuà, suǒyǐ bùyào pànduàn, dànshì

landlessness of ordinary people

^^something like that^^^