I believe it is A because the plant is offering protection while the bacteria is converting it in to nitrogen that the plant can use!
Continuous spectrum and line spectrum are two types of spectra; their main difference is that continuous spectrum contains no gaps whereas line spectrum contains many gaps.
Answer:
Electrons orbit the nucleus.
Explanation:
Calcium carbonate (Chalk) is a chemical compound, with the chemical formula CaCO3. Calcium carbonate (Chalk) is a chemical compound, with the chemical formula CaCO3.
