What is a population in an ecosystem?

All the individuals of one species in an area

Why do food chains rarely have more than four or five trophic levels?

About 90 percent of energy is lost at each transfer, leaving too little to support more levels

Matter cycles and energy flows one way

They break down dead organisms and waste, recycling nutrients

The maximum population size an environment can support over time

When prey are plentiful, predators have more food and reproduce more

Protecting habitats and managing resources sustainably

12questions. Pick an answer and you'll see why right away.

What is a population in an ecosystem?
Which of these is an abiotic factor?
Roughly what percentage of energy passes from one trophic level to the next?
Why do food chains rarely have more than four or five trophic levels?
In an ecosystem, which statement is correct?
What is the role of decomposers in an ecosystem?
What is carrying capacity?
Which of these is a limiting factor on a population?
In a predator-prey cycle, why does the predator population usually peak shortly after the prey population?
A bee gets nectar from a flower while pollinating it. Both benefit. What is this relationship?
Which human activity is the biggest single cause of falling biodiversity?
Which is a valid solution to reduce human impact on ecosystems?