Environmental Science

It is any substance that occupies space and has mass.

• Element

• Molecule

• Matter

• Science

Which of the following is NOT a common element to all living things?

• Phosphorus

• Zinc

• Hydrogen

• Nitrogen

The atmosphere is rich in nitrogen and oxygen but contains little carbon and hydrogen.

• True

• False

It is the largest percentage of elements in the atmosphere.

• Oxygen

• Nitrogen

• Hydrogen

• Helium

It is the smallest unit of matter that retains all of the chemical properties of an element.

• Element

• Molecule

• Nucleus

• Atom

Protons are much smaller in mass than electrons.

• True

• False

The basic functional unit of life is a cell and all organisms are made up of one or more cells called _______.

• Carbon

• Macromolecules

• Macrocells

• DNA

All the individuals of a species living within a specific area are collectively called ____.

• Population

• Community

• Ecosystem

• Forest

What does the picture tell you?

Organisms acquire energy that is passed from one organism to another. This is called _______.

• Food web

• Interaction

• Food chain

• Life cycle