Sunlight, water, air are examples of this
What are abiotic factors?
Anything that limits the number of individuals that can be present in an ecosystem
What is a limiting factor?
All energy on earth comes from (with the exception of deep ocean trenches...)
What is the sun?
The recycling of nutrients from dead things back into living things
What is decomposition?
When a population's food source disappears, its overall size will...
plants, animals, and insects are examples of this
What are biotic factors?
The number of individuals an ecosystem can hold
What is carrying capacity?
Arrows always show the direction of this
What is energy travel?
mushrooms, bacteria, worms, and roly-polys are all examples of
What are decomposers?
An interaction when both species benefit
What is mutualism?
Abiotic factors shown in this ecosystem diagram
What are solar radiation, moisture, habitat, minerals, nutrients?
Examples of limiting factors (list at least three)
Answers may vary- example answers: What are food, water, space, predator/prey, disturbances, etc.
The number of food webs in this image
What is 6?
This is a major building block of life and an element that cycles through ecosystems on time scales of minutes to milleniums
What is carbon?
This is the trophic level with the largest population in any ecosystem
What are producers?
abiotic factors animals need to live
What are oxygen, water, and habitat?
Predator populations decrease when...
Prey populations increase
The base of every food chain and food web
carbon cycles between plants and animals by way of...
What is photosynthesis and cellular respiration? (photosynthesis and respiration or "breathing out" are also acceptable answers)
This is the trophic level with the smallest population in any ecosystem
What is a tertiary consumer?
Abiotic factors plants need to make food
What are sunlight, water, and carbon dioxide?
When a population goes above carrying capacity, it will...
Decrease until it meets carrying capacity
Only 10% of energy travels up between ___ ____.
What are trophic levels?
Carbon stored in ___ ____ can be stored for millions to billions of years.
What are fossil fuels?

If snakes were removed from this ecosystem, what populations would increase?
Mice and rabbits because snakes eat mice and rabbits