Which biogeochemical cycle is a slow cycle because the element is not found in gas form and because the main source is in rock formations, which take a long to make and to break down?

When describing the parts of a biogeochemical cycle the term “sink” refers to  

Scientific Consensus is often interpreted as “most scientists agree” however this is misleading because science should be based on  ___ not ____.

 A niche can be defined as 

A population is defined as 

The epithelium best adapted for a body surface subject to abrasion is

The advantage of excreting wastes as urea rather than as ammonia is that

Natural selection should favor the highest proportion of juxtamedullary nephrons in which of the following species?

The sequence of developmental milestones proceeds as follows:

In 2012 a British teenager celebrated her birthday by drinking a cocktail made with liquid nitrogen and alcohol.  The liquid nitrogen froze her stomach, and her stomach had to be removed surgically.  Given what you know about the function of the digestive tract, what potential implications might removing a person’s stomach have for that person’s ability to digest food?  What might that person now have to consider doing to ensure proper nutrition?   Explain your reasoning.