Ms. Micciulla's 8th Grade Science EOG Review Part 1

A characteristic that describes how the matter will change under certain circumstances.

A trait or structure that improves an organism's chance for survival and reproduction.

Organisms in the same ecosystem try to get the same resources.

A series of events in which one organism eats another and obtains energy.

A organism that obtains nutrition and energy by eating other organisms.

A mixture of two or more metals.

Organisms in the same ecosystem share resources and help each other.

The rapid growth of algae encouraged by too many nutrients in the water.

A group of organisms that share most characteristics and can breed with one another.

The soft layer of the Earth's mantle made up of semisolid rock.

This federal agency sets the maximum levels of environmental contaminants that are acceptable.

The living parts of an ecosystem.

A substance with a pH of greater than 7.

A symbiotic relationship where one organism benefits and the host is unaffected.

The temp at which gas bubbles form in a liquid and rise to the surface to escape the liquid.

Healthy aquatic systems contain this.

Determines the types of organisms that can live in an aquatic ecosystem.

A statement that all living things are composed of cells.

Materials having a pH of less than 7.

As water does this it loses vital gases and its ability to sustain life.

A green pigment that captures the energy of the Sun to drive the process of photosynthesis.

Water that does not filter through the ground.

What is the most common compound on Earth?

A chemical substance made by the body to help destroy an invading pathogen.

Randomly occur to produce variations.

Ecosystem at the surface of the ocean that receives the most sunlight, heat, and energy.

The portion of Earth that contains water.

Changes in this can affect the survival of individual organisms and entire species.

The Father of Evolution.

An ecosystem that is controlled by the movement of the tides.

A chemical compound that cells use for energy.

An ecosystem where fresh river water meets the ocean water creating brackish water.

The actual age of a rock or fossil or how long ago an event occurred.

Occurs when surface water is blown off shore and cold nutrient rich water rises to the surface.

Over half the worlds fish are caught in these areas.

The best explanation based on the scientific evidence available.

The smallest unit of an element that has all the properties of the element.

What is the Atomic Number of Gold (Au)?

A large group of micro-organisms that can be harmful or helpful to other living things.

To examine data to decide what the data shows.

The process of change in a species over time.

Populations with the most desirable traits compete long enough to reproduce and pass traits on.

Organisms that are used to assess the health of a water system.

Two or more elements combined chemically.

The process cells use to obtain energy from food.

The tendency of water to stick to other substances.