Environmental Changes and Human Impact

The video explores environmental changes, distinguishing between short-term and long-term impacts on organisms and ecosystems. Short-term changes occur rapidly, forcing immediate adaptation or extinction, while long-term changes allow for gradual adaptation over generations. Examples include droughts, smog, and deforestation. The video also discusses human dependence on oceans for resources and the negative and positive impacts of human activities, such as overfishing and artificial reefs, on ocean systems.

What are the two main types of environmental changes discussed in the video?

• Temporary and permanent changes

• Long-term and permanent changes

• Short-term and long-term changes

• Short-term and medium-term changes

Which of the following is NOT an example of a short-term environmental change?

• Smog

• Drought

• Ice age

• Volcanic eruption

What is the immediate effect of short-term environmental changes on populations?

• They have time to adapt

• They experience no change

• They develop new species

• They must move, change behavior, or face extinction

How do long-term environmental changes affect organisms?

• They cause instant extinction

• They have no impact on organisms

• They lead to adaptations over generations

• They force immediate behavioral changes

Which of the following is an example of a long-term environmental change?

• Flooding

• Blizzard

• Deforestation

• Tornado

What is the term used to describe the survival of organisms best adapted to long-term changes?

• Immediate survival

• Instant adaptation

• Rapid evolution

• Natural selection

What is one of the main reasons humans depend on the ocean?

• For forest conservation

• For mountain climbing

• For food and climate regulation

• For desert exploration

Which of the following is a negative human modification to ocean systems?

• Replanting native crops

• Creating artificial reefs

• Overfishing

• Restocking fish hatcheries

What is a positive human modification to ocean systems?

• Runoff

• Oil spills

• Habitat destruction

• Fishing regulations

What is the impact of introducing exotic species into ocean systems?

• They take away resources from existing species

• They enhance biodiversity

• They improve water quality

• They have no impact