Ecological Range of Tolerance in Salmon and Its Impact on Organisms

Mr. Smeeds introduces the concept of ecological range of tolerance, explaining how organisms endure various environmental conditions. Using salmon as an example, he illustrates genetic diversity's role in tolerance. He describes the optimal, stress, and intolerance zones within tolerance ranges. Writing tips for FRQs emphasize connecting human activities to ecological tolerance and specifying physiological stressors. The video concludes with a practice skill on identifying testable claims in passages.

What does the ecological range of tolerance refer to?

• The range of conditions an organism can endure before injury or death.

• The range of food sources an organism can consume.

• The range of habitats an organism can inhabit.

• The range of predators an organism can avoid.

How does genetic diversity benefit a population of salmon?

• It allows them to swim faster.

• It enables some individuals to survive in warmer waters.

• It makes them more colorful.

• It increases their size.

Which zone within the range of tolerance is where organisms thrive?

• Danger zone

• Optimal zone

• Range of physiological stress

• Zone of intolerance

What happens to organisms in the zone of physiological stress?

• They thrive and reproduce.

• They experience stress but can survive.

• They migrate to a new habitat.

• They die immediately.

What is a key writing tip for FRQs related to ecological tolerance?

• Avoid mentioning specific stressors.

• Focus on historical data only.

• Connect human activities to ecological tolerance.

• Use complex vocabulary.

Why is it important to cite specific physiological stressors in FRQs?

• It shortens the answer.

• It is not important.

• It confuses the reader.

• It makes the answer more specific and stronger.

What is an example of a physiological stressor for fish due to global warming?

• Improved habitat conditions

• Suffocation due to less dissolved oxygen

• Increased food supply

• More predators

How can global warming affect plant species?

• By causing droughts that reduce soil moisture

• By increasing soil nutrients

• By enhancing growth rates

• By providing more sunlight

What is the practice skill introduced in the video?

• Memorizing facts

• Identifying the author's claim in a passage

• Writing a detailed essay

• Drawing a graph

What should a claim identified in a passage be?

• A historical fact

• A testable hypothesis

• A personal opinion

• A fictional story