Food Webs

The video explains food webs, which consist of interconnected food chains showing energy flow in ecosystems. It highlights the roles of producers, consumers, and decomposers. Producers, like grass, capture solar energy through photosynthesis. Consumers, such as herbivores, omnivores, and carnivores, obtain energy by eating other organisms. Decomposers recycle nutrients back into the environment. The video also discusses the impact of environmental changes on food webs, emphasizing species interdependence.

What is the primary source of energy for most food chains?

• The wind

• The ocean

• The sun

• The moon

Which type of consumer only eats plants?

• Decomposer

• Herbivore

• Carnivore

• Omnivore

What role do decomposers play in an ecosystem?

• They produce energy from the sun

• They consume only meat

• They release nutrients back into the environment

• They are primary consumers

How can a pollutant affecting phytoplankton impact the food web?

• It would have no effect

• It could cause a decline in species that rely on phytoplankton

• It would increase the number of salmon

• It would only affect the phytoplankton

What does the interdependence of species in a food web imply?

• Breaking one link can endanger the entire web

• Species can survive independently

• All species are at the same level

• Energy flows only in one direction