What type of organism generates its own internal body heat? Select the best answer. 

What is the average transfer efficiency of energy between trophic levels?

Coral reefs thrive in nutrient-rich waters.

When considering the ocean gyres, which portion of a gyre has the fastest flowing surface currents?

Air will flow from regions of to regions of .

Is this a Fault- and Event-Tree Analysis base on the slides –   A fault-tree analysis is a method where the analyst starts with a risk event and looks for all possible causes of the event. This is diagrammed as a tree, with the risk event at the root and the causes extending away as branches. This analysis is used to discover all of the potential causes of the event (threats and threat actors in this case) so that they can be further analyzed for likelihood.  Similar to the fault tree, the event-tree analysis is also diagrammed as a tree structure but takes the opposite approach (bottom-up as opposed to top-down).

If an element has an atomic number of 9 and an atomic mass of 19, how many protons are in a single atom of this element?

What would the thickness of sediments be at a location where the oceanic crust is 4 million years old and the average rate of sedimentation is 1.25 cm/1,000 years?

Which tidal cycle is characterized by two high tides and two low tides of approximately equal size each day? Select the best answer

Match each type of sediment to its source.