(50 points) pls help with the worksheet, I got a F in this class bro

Why should the united state be concerned about air pollution in china?

Which codon is the code for the amino acid histidine (his)?

Type the correct answer in the box. use numerals instead of words. fiona has a lovely flower bed in her yard. she wants to add a fence along one side of the flower bed. the fence material is sold in meters. fiona knows that her flower bed is 200 centimeters in length. how much fencing material does fiona need in meters? fiona needs meters of fencing material for her flower bed.