Homeostatic Disruptions

Mr. Anderson discusses the effects of homeostatic disruptions, focusing on environmental changes and their impact on cells, molecules, populations, and ecosystems. He highlights the role of invasive species like earthworms in North America and the brown tree snake in Guam. The video also covers dehydration, its types, and its severe effects on the human body. The discussion emphasizes how these disruptions can destabilize ecosystems and human health.

What is an example of an invasive species that has affected North American forests?

• Common myna

• Brown tree snake

• Earthworm

• Cane toad

What is the primary reason earthworms are considered invasive in North America?

• They were brought by pilgrims and settlers

• They were introduced by glaciers

• They evolved in North America

• They naturally migrated from other continents

Which type of dehydration involves the loss of water only?

• Hypertonic dehydration

• Hypotonic dehydration

• Isotonic dehydration

• Osmotic dehydration

What percentage of water loss in the human body can lead to muscle spasms and dim vision?

• 2%

• 15%

• 5%

• 10%

Which invasive species has caused the extinction of bird species on Guam?

• Short-tailed weasel

• Cane toad

• Brown tree snake

• Carp

What is a consequence of introducing invasive species to new ecosystems?

• Increased biodiversity

• Improved ecosystem health

• Lack of natural predators

• Stabilized food chains

What is a potential risk of introducing a natural predator to control an invasive species?

• It will increase the population of the invasive species

• It will have no effect

• It will definitely solve the problem

• It may lead to further ecological imbalance