Food Chains and Food Webs
This organism makes it's own food and starts most food chains.
What is a producer?
What is the original source of energy for most ecosystems
What is the sun?
Mushrooms are an example of this role
what is a decomposer
This happens when humans build houses where animals live
what is habitat loss
Matter moves from plants to animals through this
what is eating/food chains
In a food chain grass- rabbit- fox, what does the fox eat
What is the rabbit
Only about this percent of energy moves to the next level
What is 10%
Animals that eat only plants are called this
What are herbovores
A species that is not native and causes harm is called this
what is an invasive species
Plants take in this gas from the air
What is carbon dioxide
What do arrows show in food webs
What is the direction of energy flow
If plants have 1,000 units of energy, how much do herbivores get?
What is 100 units?
Animals that eat both plants and animals are called this
What are omnivores
Why can invasive species be harmful
what is they compete with native species
Animals breathe in this gas
What is oxygen
If a mouse population decreases, what might happen to animals that eat mice?
What is decrease?
Why do top predators get the least energy
What is energy is lost at each level
What do decomposers return to the soil
What are nutrients/matter
What might happen if a predator disappears from an ecosystem
What is prey population increases
When organisms die, what happens to their matter
What is decomposers break it down
What is they show more feeding relationships
What happens to most energy as it moves through a food chain?
What is it is lost as heat
Why are decomposers important
What is they recycle matter in exosystems
How can adding a new species affect an ecosystem
What is it can change the balance
Why do plants and animals depend on each other
What is they exchange gases and matter