Scientific reading

5. – Places where garbage and waste materials are buried.
7. – Able to withstand high temperatures without being damaged.
8. – To convert waste into reusable material.
9. – Something that can be maintained over time without harming the environment.
12. – To break down food in the body so it can be used for energy.
13. – A group of interacting or interdependent parts forming a whole.

1. – Decayed organic material used to fertilize soil.
2. – A scientific test done to discover or prove something.
3. – The molecule that carries genetic information in living organisms.
4. – A substance formed by or used in chemical processes or reactions.
6. – A group of atoms bonded together, the smallest unit of a chemical compound.
10. – Waste material; things thrown away.
11. – A protein that speeds up chemical reactions in living organisms.
14. – A procedure to check quality, performance, or reliability.