Help I think it’s C or B During Earth's early history, what was a major carbon sink?

A) Erupting volcanoes

B) Ocean water

C) Meteor Impacts

D) Land animals

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

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2

Question 3(multiple choice worth 4 points) (04.04 lc) what does it mean when an element is reduced? it empties a valance shell, reducing its atomic radius. it gains electrons, reducing its overall charge. it increases electronegativity, reducing its ability to bond. it loses electrons, reducing its electron number.