Please help me out this is a test. The imaje shows a plate baundary. Arrows have been added to indicate the movement if the plates.

How have the greenhouse gasses increased from the year 2000 to 2018

Can someone me with 6 to 10 plz this is for masteries test.

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.