Pentathlon Science 1

The most widespread pollunant in the ocean is

Early exploration of the ocean was acheived through

The overgrowth of algae as a result of agricultural runoff is known as

Marine biology is

Animals lacking a backbone are called

Non-living components of an ecosystems are called

The scientific study of how organism interact with the environment is called

Marine biology is studied using what process?

Ocean divisions are based on distance from the land, water depth and

Introduced species that cause damage to an ecosystem are called

The ocean is composed of

The Earth is 4.5 billion years old, but the ocean are only

Which of the following in NOT a major geochemical cycle in the ocean?

Organisms that can create their own food are called

Coral reefs are large geological structures made of

Non-living resources from the ocean include all but

What has shaped the oceans and continents for millions of years?

Plankton are classified as

Human rely on

Water covers what percentage of our planet?