Lesson 1
What is a Niche?
An organism's role or job in an ecosystem.
What is the Trophic Level?
An organisms position in an Ecosystem
What is Symbiosis?
A close relationship between two or more living things of different species.
What is Parasitism?
A relationship between two living things of different species in which one benefits and the other is harmed.
A Living thing that makes its own food.
Producer
What shows the amount of energy at each trophic level in an ecosystem?
An energy pyramid.
What is Carrying capacity?
the largest number of individuals of one species that an environment can support without harmful affects.
Name all 5 Limiting Factors mentioned in our lesson 3
food, territorialism, predator-prey cycle, weather, and diesease.
Consumers are divided into 4 different groups or niches depending on their food. Name all 4.
Herbivore, Carnivore, Omnivore, ad Scavenger
Each trophic level receives about how many percent of energy from the previous level?
About 10%
what is limiting factor?
Something that keeps the size of a population from growing to large.
How do food chains and food webs differ?
Food webs are more complex and contain many food chains.
Living things that break down dead organisms and waste into nutrients and minerals.
Decomposer
How are food chains and food webs alike?
Both show the flow of energy and link organisms by their feeding relations.
Explain how the predator-prey cycle occurs.
Prey is abundant, predators increase, prey then decreases, predator also decreases, prey recovers, and the cycle repeats.
Explain how an animal might switch roles from an omnivore to a scavenger.
There are few food resources, and if people live nearby, the animals can get into their garbage.
What would happen if the herbivores were affected by a sickness?
Carnivores will not have food sources, producers will increase
Can energy move from one ecosystem to another?Explain why.
Yes, living things can belong to more than one food chain.
A relationship between two living things of different species in which one benefits and the other is neither helped nor harmed.
Commensalism
Name all 3 kinds of symbiosis.
Mutualism, commensalism, and parasitism.