Define a consumer.
What is an animal that eats plants or other animals.
The amount of energy LOST as energy transfers from one organism to another.
What is a 90%?
Define producer.
What is an organism that makes their own food?
An organism that breaks down dead or decaying plant or animal material AND returns nutrients to the soil.
What is a decomposer?
Consider this food chain: blackberries=> bird=> cat => coyote. Identify the secondary consumer.
What is the cat?
When a frog eats a grasshopper (370 kcal), how much of the grasshopper's energy is transferred to the frog?
What is 37 kcal?
The struggle or fight between organisms for the same resource.
What is competition?
Consider this food chain: acorns=> squirrels=> snakes => hawks. Which organism sits in the 3rd trophic level?
What are snakes?
In a food web, hawks eat snakes and rabbits. Snakes eat mice, and mice eat grass. Rabbits also eat grass. If a disease drastically reduces the snake population, what will most likely happen to the populations of mice, grass, and hawks?
A. Mice decrease, grass increases, hawks increase
B. Mice increase, grass decreases, hawks decrease
C. Mice increase, grass increases, hawks increase
D. Mice decrease, grass decreases, hawks decrease
What is B. Mice increase, grass decreases, hawks decrease ?
Write symbols that represent the following symbiotic relationships: Mutualism, Commensalism, and Parasitism
What is Mutualism: ++ or :) :) , Commensalism: + 0 or :) :|, Parasitism: + - or :) :(
In a Mississippi swamp, the fish population contains 1,500 units of energy, approximately how many units of energy are available to the great blue heron who eats the fish?
What is 150?
In a Mississippi swamp ecosystem, would you expect the alligator or fish population to be bigger? A) fish, because they feed more predators B) fish, because alligators can't see them very well C) alligators, because they are at the top of the food chain D) alligators, because they have to eat a lot
What is A, because fish feed more predators?