Answer:
The nitrogen cycle could not exist without nitrogen fixing microbes. These microorganisms are capable of transforming the atmospheric nitrogen in the form of fixed nitrogen. This form of nitrogen can be used by the plants. More than 90 per cent of the nitrogen are converted into usable form by the help of nitrogen fixing bacteria.There are basically two steps in nitrogen cycle. Nitrification and denitrification. The conversion of ammonia to nitrate is called nitrification and the conversion of nitrates into nitrogen is called Denitrification. The Rhizobium, Clostridium, some blue-green algae, Pseudomonas are some species of bacteria involved in Nitrogen Cycle.
Explanation:
Skin is a vital tissue in one’s body. It then protects One from dehydration and infection and allows one to feel heat or pressure. It would be renewed Throughout in one life. They are unipotent
The only way you can find out the age of the rocks is if you determine the half-life of the radioactive material.
Answer: A
Explanation: Vaccines create memory cells with a weak version of the pathogen, so when they meet that pathogen again the body can respond more quickly and more efficiently since they have already been exposed to the pathogen.
Answer:
B) Identifying the minerals within it
Explanation:
Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date the age of rock layers.
