Positive and Negative Human Impact on Ocean Systems

The video discusses biodiversity, highlighting its importance and the threats posed by human activities. It covers habitat destruction, overharvesting, pollution, and climate change as major factors reducing biodiversity. The introduction of alien species and the effects of climate change are also explored. The video emphasizes the need for conservation efforts to maintain biodiversity.

What is the estimated number of species on Earth?

• 10 million

• 8.7 million

• 12.5 million

• 5 million

Which human activity is NOT mentioned as a cause of habitat destruction?

• Manufacturing

• Mining

• Urbanization

• Agriculture

What is a consequence of overharvesting?

• Increased biodiversity

• Resource depletion

• Habitat creation

• Species adaptation

What is eutrophication primarily caused by?

• Fertilizer runoff

• Deforestation

• Air pollution

• Overfishing

Which of the following is a result of acid rain?

• Increased fish population

• Decreased water acidity

• Death of aquatic species

• Enhanced plant growth

How many species are estimated to be in transit on ocean vessels daily?

• 4,000

• 3,000

• 2,000

• 1,000

What is a potential impact of introducing alien species?

• Increased native species

• Improved biodiversity

• Balanced ecosystems

• Disruption of local habitats

What human activity is accelerating global warming?

• Water conservation

• Afforestation

• Recycling

• Burning fossil fuels

What is a predicted consequence of climate change on biodiversity?

• Significant biodiversity loss

• Increased sea ice

• Decreased ocean acidification

• Stable weather patterns

What is one effect of changing rainfall patterns due to climate change?

• Decreased droughts

• Altered habitats

• Stable ecosystems

• Increased biodiversity