When two or more individuals or populations try to use the same resources
What is competition?
100
The four basic needs of all living things.
What are food, water, shelter, and air?
100
The first source of energy for all food webs.
What is the sun.
100
The level of environmental organization that includes a group of the same organisms living together in a particular area.
What is a population?
200
The SI Unit of measure for volume
What is a liter?
200
A type of organism that gets its food from breaking down the remains of dead plants and animals.
What is a decomposer?
200
A turtle eats insects, tadpoles, and aquatic plants. The turtle is a type of consumer known as a _____________.
What is an omnivore?
200
A diagram that follows the flow of energy through various feeding patters of a series of organisms.
What is a food web?
200
The level of environmental organization that includes a community, as well as the surrounding abiotic factors.
What is an ecosystem?
300
The group in an experiment that is kept constant as a reference point.
What is a control group?
300
An organism that eats the remains of dead or dying animals
What is a scavenger?
300
A type of organism that makes its own food using energy from the sun, water, and carbon dioxide.
What is a producer?
300
A singular pathway of energy flow that shows the feeding relationships between organisms in an ecosystem.
What is a food chain?
300
The level of organization that a scientist would be observing if he were to observe the interactions between two populations of living organisms.
What is a community?
400
The SI unit of measure for mass?
What is a gram?
400
Place the following words in order of how they get their energy, starting with the sun: scavenger, herbivore, decomposer, producer, carnivore
What is producer>herbivore>carnivore>scavenger>decomposer
400
A type of organism that gets its energy by consuming other organisms.
What is a consumer?
400
Shows an ecosystem's loss of energy. Producers make up the base.
What is an energy pyramid?
400
Factors in an environment such as plants and animals.
What is an biotic factor?
500
The reason we use controlled experiments.
To know that our experiment is testing only one variable at a time?
500
The following statements are from a lab report on a plant experiment. Which statement is an inference and not an observation:
a. lack of light caused the plants to grow slower
b. all plants bent toward a light source
c. all plants grew less than 2cm
d. several of the plants have yellow leaves
A.
500
The process by which green plants convert energy from the sun into energy stored in carbon-containing molecules.
What is photosynthesis?
500
Draw arrows between the following organisms to correctly show the flow of energy in an ecosystem: grass, snake, bird, grasshopper
grass>grasshopper>bird>snake
500
The biosphere
What is the part of the earth where living things exist?