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When two or more individuals or populations try to use the same limited resource such as food, or space
Competition occurs _______ species because their niches overlap
Between members of the same species
Between members of different species
Both within and between species
Only between organisms of
A relationship in which one organism lives on or in a host and harms it.
In a parasitic relationship, the parasite will ____while the host is _____.
Benefit, weakened or exposed to disease
Benefit, also benefited
Decompose, gaining nutrients
A relationship between two organisms of different species where one benefits and the other is neither harmed nor benefited
A relationship between two species in which both species benefit
A frog eats a fly. The frog and fly are demonstrating ________.
A tick and a dog have this type of relationship.
Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales. What kind of relationship is this?
The crocodile and bird have a _______________ relationship. The crocodile benefits by having its teeth cleaned. The bird benefits by gaining food and protection. Both animals benefit from this relationship.
Which one of the following statements is NOT true?
In a food web, an organism can only occupy a single trophic level; primary consumers cannot eat at the secondary consumer level.
A food chain shows one possible route of energy transfer within an ecosystem.
A food web consists of many possible food chains.
A more complex food web suggests that an ecosystem would be more resistant to disturbances.
An autotroph is also called a ______.
A fox's diet contains beetles, eggs, berries, fish and mice. What kind of consumer is a fox?
None of the above
A group of deer, chipmunks, otters, and insects and their ABIOTIC surroundings is a(n)..
Which definition best fits the term niche?
the environment in which an organism lives.
Factors in the environment that are considered not alive
The study of the interactions between animals and their environment
The role a species plays in the ecosystem.
Groups of different populations living together in the same place at the same time
The living or once living organisms in an ecosystem
A species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.
Makiah is heading out for a run when she comes across 20 Canadian geese. What level of organization is this group of Canadian geese?
What percentage of energy is passed on to each trophic level?
Because energy and biomass become less available in higher trophic levels, organisms in higher trophic levels need to consume _____ amounts of prey.
Which statement accurately describes how much energy is available within different trophic levels of an ecosystem?
The amount of energy available to tertiary consumers is 10 times greater than the amount available to secondary consumers.
The amount of energy available to producers is 10% of the amount available to primary consumers.
The amount of energy available to primary consumers is 10% of the amount available to producers.
Top predators have the most available energy because they can feed on any trophic level.
Which trophic level has the most energy available?
Using the graph , describe the relationship between the hare and lynxes. Use actual data from the graph to provide support