A device that either multiplies or redirects a force.
What is a simple machine?
The smallest unit of life in creation.
What is a cell?
The study of living organisms.
What is biology?
Organs for taking oxygen from water.
What are gills?
A rate at which an object moves.
What is speed?
A method of sorting things according to shared qualities or characteristics.
What is classification?
Consisting of a single cell.
What is unicellular?
A community of organisms that interact with each other and their physical environment.
What is an ecosystem?
The speed of an object at a given direction.
The process by which green plants and some other organisms use the energy of sunlight and simple chemicals to produce their own food.
What is photosynthesis?
Consisting of more than one cell.
What is multicellular?
A close living situation between 2 species where at least one of the species benefits.
What is symbiosis?
A push or pull exerted on an object in an effort to change that object's velocity.
What is force?
An organism that breaks down the dead remains of other organisms.
What is a decomposer?
Organisms that obtain their nourishment from dead organisms.
What are saprophytes.
The production of visible light by living organisms.
What is bioluminescence?
A closed path through which electric current flows.
What is an electric circuit?
The first criterion of life is that all living things contain hereditary information in their ______ which enables life to continue through reproduction.
What is DNA?
Provides either controlled or uncontrolled movement in the body.
What is muscle tissue?
Echinoderms' bodies are designed with a base of how many radiating parts?
What is five?