"Earth's Fever" Refers to

question 66

Multiple Choice

"Earth's fever" refers to

• A) a rise in the temperature of Earth believed to be due to greenhouse gases
• B) the potential pandemics that many scientists believe could occur at any time with the burgeoning human population
• C) current disease epidemics, mainly those associated with disease spreading from animals like birds and livestock to humans
• D) Earth's crust
• E) potential volcanic eruptions in locations that have not experienced such activity in many years

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Definitions:

Cell Membrane

The thin, flexible barrier that surrounds cells, controlling the movement of substances in and out of the cell.

Action Potential

A short-lasting event in which the electrical membrane potential of a cell rapidly rises and falls, facilitating neural communication.

Absolute Refractory Period

A phase during the action potential of a neuron in which it is impossible for the neuron to fire again, regardless of the strength of any incoming stimuli.

Neural Impulse

Also known as an action potential, it is the electrical signal that travels along the axon of a neuron.