1.
Using resources in a way that meets present needs without harming the future.
2.
The act of picking between two or more options.
3.
To help or give strength to someone or something.
4.
Things that are not useful and are thrown away.
5.
The careful use and protection of natural resources.
6.
Paying attention so no harm or mistake happens.
7.
Ready to give assistance or make things easier.
8.
The feeling of joy or contentment.
9.
To do something fast or in a short time.
10.
The absence of light; when it is dark.
