HELP Thousands of golden toads, shown below, used to occupy the tropical forests of Costa Rica.
In the late 1980s, however, unusually warm weather caused many of the pools that the toads used as breeding areas to dry up. By
2004, the golden toad was listed as extinct.
This example demonstrates how
A. extinction is directly related to human impact.
B. extinction is caused by bacteria, fungi, and other infectious agents.
C. extinction can be related to invasion by non-native species competing for resources.
D. extinction can be related to a failure to adapt to changes in the environment.

Other organisms can change their behavior to take the place of the plants in the ecosystem.

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Na+ loss through sweet plus the dilution has lowered na+ concentration outside of neurons, altering the na+ equilibrium potential. sodium exists more outside the cells than inside. when na+ is lost by sweat plus the dilution( because they drink a lot of water) changes the concentration outside the cell, forcing the water to enter the cell and attempt to balance the concentration inside/outside.the problem is that the abundance of water will cause the cells to swell. most cells can adapt, however, the brain cells can't that's why the runner has confusion and can't control the muscles.  if not treated and this occurs in less than 48 hours, it can be immediately fatal .