Introduction to Matter
How many elements are there on the periodic table
118
The burning of a substance
combustion
What is a index fossil?
A fossil that is found in the rock layers of only one geologic age and that is used to establish the age of the rock layer.
A mixture consisting of tiny particles that are intermediate in size between those in solutions and those in suspension and that are suspended in a liquid, solid, or gas.
colloid
What is subsidence?
The sinking of regions of the earth's crust to lower elevations.
A relationship in which two different organisms live in close association with each other.
Symbiosis
What is the definition of sublimation?
The process in which a solid changes directly into a gas.
What is a rock? (really descriptive answer)
A naturally occurring solid mixture of one or more minerals or organic matter.
What is the difference between biotic and abiotic things.
Biotic are the living things in the environment and abiotic things are nonliving.