Biotic Factors
Give the definition of mutualism
2 organisms that benefit one another
Where does energy from all food webs come from?
The sun
What is an invasive species?
A species that was introduced into a new ecosystem and has caused negative effects
Draw an example of decomposer
Worm, bacteria, fungi/mushrooms, insects
What is the first stage of primary succession?
Bare rock
What is an example of an omnivore?
Humans, bears, birds
What are 2 abiotic factors in a forest environment?
Water, sunlight, soil, air, rocks,
What is bioaccumulation?
When a harmful substance enters the environment and increases in concentration as it moves up the food chain
Draw an example of a producer
any tree or plant
What is the main cause of species extinction?
Habitat loss through clear cutting
Give an example of parasitism
Answers will vary
What are the 5 basic needs that all living things need to survive?
Air, water, sun, habitat (space), nutrients (food)
Name 2 ways to reduce your ecological footprint
- bus/bike more vs car
- produce less garbage
- recycle more
- eat less meat
- use less products
Draw the first stage of secondary succession
Forest fire or clear cutting
What type of monitoring involves counting the population of involves to determine how healthy an ecosystem is?
Biological monitoring
What is the difference between a food chain and a food web?
Food web - A combination of multiple food chains where organisms are interconnected
During photosynthesis, what are 3 things that trees take in and 2 things trees put out?
Require: sunlight, water, carbon dioxide
Output: oxygen and sugar
Give an example of a non-renewable resource and an example of renewable resource.
Non-renewable: Oil, gas, coal
Renewable: Wind, solar, hydroelectric, geothermal
Draw an example of transpiration
Tree releasing water
In the water cycle, what are the 2 steps in between precipitation and water evaporating from an ocean?
Run-off and groundwater
What does the pyramid of numbers tell us?
The number of organisms at each level of the food chain and that producers will always be the highest
What are 2 ways carbon can be released into the atmosphere?
Respiration (breathing) and burning of fossil fuels
After carbon is released into the atmosphere, where are 2 areas it can go next?
Into trees or into the ocean
Draw a food chain and indicate the secondary consumer
An animal that is eating another animal that is eating a producer
Give an example of a structural adaptation and behavioral adaptation
Structural - Bird with large beak to rip flesh
Behavioural - Mice that burrow to hide from predators