Vocabulary Review & Overview

the natural environment of an organism.

a change in a species over time

variety of life within an area. 

the amount of living matter in a given habitat expressed as a weight.

relationship in which two species lives in, on, or with another without damage to either.

a system of ideas intended to explain something.

living things in an environment such as plants, animals, and bacteria. 

nonliving factors in the environment such as temperature, wind, sunlight, soil, and minerals.

explanation of how 2 or more species descended from a shared parent at some point. 

inherited trait that is passed on to offspring because it helps an organism survive better.

the study of living organisms.

the group in an experiment or study that does not receive treatment and is used as a standard.

the position of an organism in a community of plants and animals.

a variable often denoted as "x" that does not depend on another variable.

relationship in which both species benefit

all of the individuals of a species that live in the same area.

group of organism so similar to one another that they can breed and produce offspring.

a variable often denoted by "y" that depends on another variable. 

facts and numbers collected during an experiment for analysis.

measuring the quantity of something such as the heaviness or thickness. 

the degree to which the result of a measurement or calculation is the correct value.

measure of an organism's ability to survive and reproduce relative to others members.

organisms that are non-native to the ecosystem and whose introduction causes harm.

an organism capable of making its own food from sunlight.

an organism that breaks down the cells of dead plants and animals into simpler structures.

any change in a DNA sequence.

any class of organisms that occupy the same position in a food chain.

relationship in which one is harmed and the other benefits.

a group of interacting populations living in the same area.

an educated guess or proposed explanation made based on limited evidence.

describing the quality of something is size or appearance.

group of interconnected elements formed by the interactions of a community of organisms.

what you have learned about the problem through experimentation.

an individual or animal, or plant.

the systematic study of the structure and behavior of the natural world.

an organism that must eat other organisms as its food source.

differences in physical traits of an individual fromthe group to which it belongs.