Some sheep have had a gene for human blood protein injected into their genome. The sheep then secrete the protein in their milk supply. This protein is purified from the sheep's milk and is being evaluated as a treatment for cystic fibrosis. The sheep is an example of

answer:

a genetically modified organism.

Explanation:

Hope this help

Have a nice day

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.