Which of Earth's unique features is the most significant, and without which, the other significant features that support life would have had no effect?

A.

angle of axial tilt

B.

distance from the Sun

C.

presence of an atmosphere

D.

presence of water on the surface

E.

presence of a solid, rocky surface

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

How do the kidneys affect homeostasis