1 is correct.
2. Nitrogen must be fixed.
Please check my answer!
Fill in the blank for below:
Resources that cannot be replaced in the environment once they are used
are _____.
renewable resources
compost
nonrenewable resources
I think the answer is nonrenewable resources.I might be incorrect, so please check!
This is another question, but I am having issues on it and cannot get it right. Please help me to find the answer.
In which natural cycle must an important gas in Earth's atmosphere be fixed
before plants can use it?
sulfur cycle
carbon cycle
nitrogen cycle
oxygen cycle
Please help!
2 answers
Thanks so much! :)
1 answer