Answer:
Asuming basic organic chemistry: Hydrocarbons
Explanation:
A hydrocarbon is an organic compound consisting entirely of hydrogen and carbon.
Answer:
I think it's D I could be wrong but that's what I'm thinking
Answer:
C or E
Explanation:
The answer is excretion only. Excretion is the expelling of waste products, water included. Transpiration is a form of water cycle, but it refers to the evaporation of water from aerial parts and its movement through plants. Respiration is the process of breathing which is mostly separate from the water cycle.
1. Healthy
2. Space
3. Recourses
4. Lower
5. Food supply
6. Increase
7. Emigration
Toothpaste and silver polish