What kind of feedback accelerates a change instead of braking it?

When organic carbon burial exceeds the rate at which weathering returns organic carbon to the atmosphere as CO2.  Does the stable isotopic composition of the atmospheric reservoir of atmospheric carbon become enriched with heavier or lighter isotopes? Explain why. 

Imagine a stream with two cross sections, A1 and A2, as shown.  If the discharge (Q) remains constant, what happens to stream velocity at Location 2 if A2 is greater than A1?

Match the correct description to the labeled feature from the image.  One description applies to two letters.

If you increased the frequency of light, what would you expect to happen to the wavelength?  

The “octet rule” helps explain why atoms bond. According to Bohr’s model, why do atoms try to achieve an octet in their outer shell?

A block of Styrofoam floats on water while a lead block of the same size block lies submerged in the water. The buoyant force is greatest on the

If Tc-99m has a mass number of 99, how many neutrons are in the nucleus?

You move to Florida and are expecting a hurricane to occur at your home.  You are concerned about your windows breaking due to the pressure difference caused by the flowing air.  Will your house have higher or lower pressure compared to the air flow inside?  If your windows shatter will they shatter towards the inside or the outside of the house?

The Christian Coalition is best described as a(n) __________ group.