Energy Flow in Ecosystems

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What is the primary source of energy for most ecosystems?

The Sun is the primary source of energy for most ecosystems.

What role do producers play in an ecosystem?

Producers convert solar energy into chemical energy through photosynthesis.

How do consumers obtain energy in an ecosystem?

Consumers obtain energy by eating other organisms.

What is a food chain?

A food chain is a linear sequence of organisms where nutrients and energy pass as one organism eats another.

Explain the concept of a food web.

A food web is a complex network of interrelated food chains within an ecosystem.

What is an energy pyramid, and what does it show?

An energy pyramid is a graphical model showing energy flow levels, with producers at the base.

Why is only part of the energy transferred to the next trophic level?

Only about 10% of energy is transferred; the rest is lost as heat or used for life processes.

What role do decomposers play in energy flow?

Decomposers break down dead matter, recycling nutrients back into the ecosystem.

How does energy flow differ in aquatic ecosystems compared to terrestrial ones?

In aquatic ecosystems, energy flows primarily through phytoplankton and zooplankton unlike plants in terrestrial systems.

What is the significance of the 10% rule in ecosystems?

The 10% rule explains energy loss between trophic levels: only 10% transfers.

How do human activities affect energy flow in ecosystems?

Human activities like deforestation and pollution disrupt energy flow and ecosystem balance.

What is meant by 'trophic level'?

A trophic level is each step in a food chain where organisms share the same role in energy transfer.

How does energy enter an ecosystem?

Energy enters most ecosystems through sunlight, captured by producers via photosynthesis.

What impact do invasive species have on energy flow?

Invasive species can disrupt existing food webs, altering energy flow and ecosystem dynamics.

What is the role of apex predators in energy flow?

Apex predators regulate prey populations, maintaining ecosystem balance and ensuring efficient energy flow.

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