Answer the following (2 pts each) 1. which of the following describes the dimethyloxytrityl (dmt) group? a. it is a chemical blocking group that is easily removed from the 5’oh by trichloroacetic acid (tca) b. during the chemical synthesis of dna, nucleotides are added in the 3’  5’ direction, therefore the 3’oh of an incoming nucleotide must be activated, but the 5’oh must be blocked c. its strong orange color can be optically measured to approximate the efficiency of dmt removal d. b and c only e. all of the above g

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

the answer is c most of the fortnite players usually buy v bucks to get the battle pass and other cosmetics but some players who are referred to as "no skins" don't   buy skins and are usually noobs.

the answer is z.

the human body has five levels of organization. level 1: cells. cells are the basic units of life and form the first level of organization. cells in the human body have specific functions. examples include nerve cells, blood cells, liver cells, and so on.