Any process used to ask and answer testable questions about observations of the “natural world” defines which term?
1. scientific consensus
2.scientific inquiry
3. scientific conclusion
4.scientific hypothesis

2.Scientific inquiry. It is the same as Science Method.

There are 5 steps :

1. Ask a question

2. Do some research for that question

3. Hypothesis ( guess what is going to happen during the experiment )

4. Test the experiment and collect the data .

5. Conclusion ( say what you learned from the experiment)

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.