Which of the following are causes for Carbon cycle imbalance that can lead to climate change? There may be more than one answer.

What indisputable evidence do we have that fossil fuel burning rather than volcanic activity is responsible for major CO2 changes in the last century?

Oxygen isotope records (¹⁸O/¹⁶O) data from corals, microorganisms, and ice cores are used as a proxy for 

We know a lot about how climate has varied through proxy indicators. Which of the following is NOT a proxy indicator? 

Based on the type of tectonic plate boundary in the figure below, what types of faults dominantly form at this setting?

Based on the type of fold that is shown in the picture, would you expect the rock layers in the center of this fold to be younger, older, or the same age as the layers on the outer most edges of the fold?

When a fault moves horizontally it is considered a 

What is the correct interpretation of the cause for seismic S-wave paths abruptly ending at the Mantle-Core boundary which results in an S-wave shadow zone?

With global warming, changes to the ocean circulation (ocean conveyor belt) can be caused by which of the following 

When two atoms have the same electronegativity, they will share electrons forming which type of bond?