The table indicates that nitrogen and oxygen are the main components of the atmosphere by volume. together these two gases make up approximately 99% of the dry atmosphere. why are these gases important?

a) they are essential to life on earth.
b) they have a great influence on climate.
c) they absorb ultraviolet radiation from the sun.
d) they increased over time causing global warming.

Why does the equilibrium position of the spring change when a mass is added to the spring? will the mass oscillate around the new equilibrium position of the spring or the previous position without a mass attached to the spring? if the equilibrium position of the spring changes by 20 cm (assuming no initial mass) when a mass is added to the spring with constant 4.9 kg/s^2, what is the mass of the object attached to the spring?