Which two elements make up most of the Sun’s mass? Question 4 options:

Hydrogen and oxygen

Carbon and nitrogen

Oxygen and carbon

Hydrogen and helium

Which would not reduce the amount of green house gasses in the air

Afeather of mass 0.001 kg falls from a height of 2 m. under realistic conditions, it experiences air resistance. based on what you know about friction, what can you say about the kinetic energy of the feather as it reaches the ground? acceleration due to gravity is g = 9.8 m/s2. a. ke < 0.0196 j b. ke = 00196 j c. je = 0 j d. ke > 0.0196 j

Anybody wanna ? (picture included? )