In an ecosystem, what is the role of a producer?

It makes its own food, usually by photosynthesis

In a food chain, which way do the arrows point?

From the organism that is eaten to the organism that eats it

Energy flows one way and is lost as heat, while matter cycles and is reused

Photosynthesis and cellular respiration

Because the soil remains (often with seeds and roots), so plants re-establish without first building soil

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

In an ecosystem, what is the role of a producer?
In a food chain, which way do the arrows point?
About how much of the energy at one trophic level is passed to the next?
An energy pyramid shows 20,000 units in the producers. About how much energy reaches the primary consumers?
Which statement correctly contrasts energy and matter in an ecosystem?
Which two processes move carbon between living things and the atmosphere in opposite directions?
In the nitrogen cycle, which organisms convert atmospheric nitrogen ( $N_2$ ) into forms plants can use?
A new lava flow cools into bare rock with no soil, and lichens are the first to grow. What is this?
Why is secondary succession usually faster than primary succession?
A population grows quickly, then levels off at a steady size. The size it levels off at is the
Which of the following is a density-independent limiting factor?
Fertilizer runoff causes algal blooms in the Chesapeake Bay; the algae die, oxygen drops, and fish die. This process is called