Energy & Food Webs
consumers
There are 3 types of symbiotic relationships...name 2 of them
parasitism, mutualism, commensalism
A trait that helps an organism survive.
Adaptation
Ability to recover after change.
Resilience
Recreation is what type of ecosystem service?
Cultural
Why are food webs more accurate than food chains?
They show multiple energy pathways
A tick feeding on a dog is what interaction?
Parasitism
Camouflage is what type of adaptation?
Structural
What is a disturbance?
Event that changes ecosystem
Double Jeopardy
How does deforestation affect food webs?
Removes habitat and producers
A food web loses one species but remains balanced. Why?
High biodiversity
If prey increase too much, what becomes limited?
Resources (food/space)
How can an adaptation improve survival during winter?
Helps retain heat or conserve energy
An invasive species enters an ecosystem. What happens next?
Native species decrease
If humans remove too many predators, what happens next?
Prey increase
Rabbits increase too much. What happens?
Plants decrease
Double Jeopardy
Two species compete for the same food source. Over time, one species decreases. Why?
Competition limits resources
How can a beneficial adaptation become harmful if the environment changes?
Trait may no longer be useful
A lake recovers after pollution. Why?
high biodiversity
Explain how human impact can decrease resilience even if biodiversity remains average.
Continuous disturbances prevents recovery
A student says:
“Energy is recycled in ecosystems just like nutrients.”
What is wrong with this statement?
Energy is not recycled; it is lost as heat.
If a new predator is introduced into an ecosystem, predict two effects.
Prey decrease; competition increases
Explain how lack of adaptation can reduce biodiversity.
Species may die out
An ecosystem has many species but most rely on one plant.
Is this ecosystem highly resilient? Why or why not?
no, reliance on once producer reduces resiliance
A student says, “Adaptations prevent disturbances.”
Why is this incorrect?
Adaptations help organisms survive, not stop disturbances.