What Is a Critical Load

question 19

Multiple Choice

What is a critical load?

• A) the amount of nutrient augmentation necessary to bring a depleted habitat back to its former level
• B) the level of a given toxin in an ecosystem that is lethal to 50 percent of the species present
• C) the amount of added nutrient that can be absorbed by plants without damaging ecosystem integrity
• D) the number of predators an ecosystem can support that effectively culls prey populations to healthy levels

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Definitions:

Left Atrium

The upper left chamber of the heart, which receives oxygenated blood from the lungs and pumps it into the left ventricle.

Angina Pectoris

A condition characterized by chest pain due to reduced blood flow to the heart muscle, often indicative of coronary heart disease.

Myocardial Infarction

A medical emergency commonly known as a heart attack, caused by the interruption of blood flow to a part of the heart, leading to heart muscle damage.

Cardiovascular Disease

Cardiovascular disease refers to a class of diseases that involve the heart or blood vessels, including coronary artery disease, heart failure, and stroke.