B ~ You cannot tell if someone was touching your hand
Hope this helps! ^^
Two key characteristics of a good scientific investigation are hypothesis and observation of whatever organism your studying.
There are many environmental negative direct outcomes of unused excess nitrogen from nitrogenous fertilizers. One of these is eutrophication. Eutrophication is the excessive richness of nutrients in a water body as a result of fertilizer run offs from the land, which causes a dense growth of plants in the water. Other negative outcomes are: green house effects, acid rain and contamination of underground water which has negative effects on human health.
Long chains of amino acids used for building, repair, and maintenance.
