Ecological Concepts and Ocean Ecosystems

The video covers living resources, focusing on ecosystems, organism adaptations, and the roles of different biomes. It explores ocean ecosystems, highlighting the diversity of life in various zones and the complexity of ocean food webs. The video also discusses forest management, comparing clear cutting and selective cutting methods. Finally, it emphasizes the importance of biodiversity and conservation, using the recovery of the peregrine falcon as a success story.

What adaptation allows cacti to survive in arid environments?

• Water storage

• Thick bark

• Broad leaves

• Deep roots

Which factor is crucial in determining the types of organisms in ocean zones?

• Salinity

• Water temperature

• Tidal patterns

• Ocean currents

Which zone in the ocean is characterized by high sunlight and diverse life?

• Abyssal zone

• Open ocean zone

• Deep ocean zone

• Intertidal zone

In the ocean food web, which organism is the primary producer?

• Dolphins

• Animal plankton

• Whales

• Algae plankton

What is the main ecological role of algae plankton in the ocean?

• Decomposer

• Primary producer

• Primary consumer

• Secondary consumer

What is a key advantage of selective cutting over clear cutting?

• It is cheaper

• It is faster

• It preserves the entire ecosystem

• It requires less labor

Which practice allows forests to regenerate more naturally?

• Clear cutting

• Selective cutting

• Slash and burn

• Monoculture planting

Which ecosystem accounts for only 7% of Earth's land area but houses over 50% of its species?

• Deserts

• Temperate forests

• Tropical rainforests

• Savannas

What was the primary cause of the peregrine falcon's decline in the 1970s?

• Hunting

• Habitat loss

• Pesticide DDT

• Climate change

What percentage of the world's saltwater fish species are found in coral reefs?

• 10%

• 20%

• 30%

• 40%