Human Impact
This term describes a resource that is replenished as fast as it is used
What is a renewable resource?
This relationship occurs when one organism, like a tapeworm, feeds off and harms a host organism
What is parasitism?
These are the first organisms to move into a barren area to begin the process of forming soil
What are pioneer species?
This term describes a heritable trait that helps an organism survive and reproduce in its environment
What is an adaptation?
These are the aspects of an experiment that a scientist keeps the same across all trials to ensure a fair test
What are constants?
This is the pattern of growth shown by the human population on Earth, which is currently growing out of control
What is exponential growth?
This type of symbiosis benefits both organisms, such as an insect gathering nectar while spreading a plant's pollen
What is mutualism?
This type of succession occurs in an area where no soil previously existed, such as on hardened volcanic lava
What is primary succession?
This is the ultimate or main source of all genetic diversity in a population
What are mutations?
This is the group in an experiment that serves as a standard for comparison and receives no special treatment
What are fossil fuels?
This feeding relationship is demonstrated when a bird swoops in to eat an insect disturbed by a grazing cow.
What is predation?
This is the type of succession that would occur if an ecosystem were damaged/destroyed by a hurricane but the soil remains
What is secondary succession?
In biology, this term refers to how well an organism can survive and reproduce in its environment
What is fitness?
This is a "living" factor in an ecosystem, such as the number of predators, that affects population size.
What is a biotic factor?
While nuclear power provides cheap electricity, this is its primary negative environmental impact due to safety and storage concerns
What is radioactive waste?
This is the specific name for competition between members of the same species
What is intraspecific competition?
This stable community is reached at the very end of the succession process
This biological process, also known as "survival of the fittest", explains how traits that help an organism survive become more common over time
What is natural selection?
These are 4 characteristics of living things
What are
- made of cells
- contain DNA or RNA
- grow
- reproduce
- respond to stimulii
- adapt and evolve
- have a metabolism
List four renewable resources
- water
- oxygen
- sunlight
- wood
- wind power
- geothermal energy
This ecological principle states that if the niches of two organisms overlap, one may eventually take over the habitat of the other
Place these in the correct order for primary succession following a volcanic eruption: mosses, coconut trees, lichen, grasses
What are lichen -> mosses -> grasses -> coconut trees?
Name the four principles of natural selection
- overproduction of offspring
- variation
- adaptation
- descent with modification
A scientist wants to find out if the amount of water a plant receives affects how many leaves it grows. She gives one group of plants 1 cup of water daily and another group 2 cups of water daily. After a month, she counts the leaves on each plant. Identify the independent and dependent variables.
Independent Variable: The amount of water given to the plants (the factor being changed).
Dependent Variable: The number of leaves on the plants (the factor being measured).