A man walks into a restaurant. He wants to know the population of the restaurant so he counts every person there.
What is direct observation
100
All the living and nonliving parts of a habitat
What is an ecosystem?
100
where an animal lives
What is a habitat?
100
living things
What are biotic factors?
100
a relationship where both species benefit
What is mutualism?
200
Mr. Gredy wants to know the population of students in the 7th grade. He goes into Mrs. Poppler's room and counts all her desks than multiples by 4 since there are 4 classes of 7th grade.
What is a sampling?
200
all of the same species living in a habitat
What is a population?
200
the strongest species survive and kill off the weaker species
What is natural selection?
200
nonliving things
What are abiotic factors?
200
a relationship where one species benefits without causing harm to the other
What is commensalism?
300
An ecologist wants to know the population of birds living in a sycamore tree. When he reaches the tree, there are no birds there. The scientist counts the nests and as signs that the bird live there to determine their population.
What is indirect observation?
300
one single being living in an ecosystem
What is a species/organism?
300
a close relationship between two organisms where at least one benefits
What is a symbiotic relationship?
300
65 percent of our bodies are made up by this abiotic factor
What is water?
300
a relationship where one species benefits causing harm to the other
What is parasitism?
400
Turtles are caught in a bay. Scientists mark each of the turtle shells with a dot of paint and release them back into the wild. Two weeks later, the scientists return and count the turtles with marks on their shells.
What is mark and recapture?
400
all the living organisms in a habitat
What is a community?
400
behaviors or physical characteristics that organisms develop over time to help them survive in their habitat
What are adaptations?
400
this abiotic factor is important because it determines what kind of plants can grow in an environment
What is soil?
400
a flea living on a dog and biting it to use a food source is an example of which type of symbiotic relationship?
What is parasitism?
500
This term refers to how many members of a population a certain ecosystem can support.
What is carrying capacity?
500
the levels of organization from smallest to largest.
What is organism, population, community, ecosystem
500
difference between predator and prey
What is predators kill other organisms for food, prey are killed as food