Ecosystems
What are all the living and nonliving things in a given area?
An ecosystem
What is competition in an ecosystem?
Competition is the demand for resources in short supply in an ecosystem
Where do people get their energy from?
People get their energy from the food they eat
What is a niche?
The way a species interacts to get food, water, and the things needed for life.
What is the difference between abiotic and biotic factors
Abiotic factors are the nonliving things of an ecosystem
Biotic factors are the living or once living things
Why is overpopulation a bad thing for an ecosystem?
If a species is overpopulated they will use up all the resources affecting other species and populations in that ecosystem
What is the biggest form of energy in the world?
The sun
What is symbiosis?
A close, long term relationship between two species that usually involves an exchange of food or energy
Give an example of a biotic and an abiotic factor
Biotic- plants, animals, bacteria
Abiotic- Water, rocks,
What does it mean when it is said animals are competing against humans?
Animals and people need a lot of the same abiotic and biotic factors to survive. It is easier for people to obtain these needs so animals must work harder and think of ways to survive.
Provide an example of a decomposer, consumer, and producer
Decomposer- Worm
Consumer- Human, other animals
Producer- Plants
The act of an organism feeding on its prey is what
Predation
What are two ways a population could change?
Lack of food, natural disaster, introduction of new predator all could be examples of how a population could change.
How is predation different from symbiosis?
Predation is consuming something dead or dying, where symbiosis is an interaction with two living organisms
What is the difference between a producer, a composer, and a decomposer
A producer makes its own food
A consumer cannot make its own food
A decomposer breaks down dead and decaying organisms
What is a place in an ecosystem that provides basic needs for survival?
Habitat
What is the difference between a population and a community?
A population is all the organisms of the same species living in the same area at the same time.
A community is all the populations living in the same area at one time
Explain the difference between mutualism, commensalism, and parasitism
Mutualism- Both organisms benefit
Commensalism- One organism benefits, but the other organism is not harmed
Parasitism- One organism benefits and the other is harmed in the process
What is the difference between a food web and a food chain
A food chain shows how energy flows in an ecosystem through feeding relationships
A food web is showing how different food chains in an ecosystem interact and mix with other food chains
What is the size of a population compared to the amount of space available?
Population density