Major Components of an Ecosystem

The Sun is a

• Tertiary Producer of energy

• Secondary source of energy

• producer of water

• Primary producer of energy

The green color of plants that is produced from organelles called

• cell membranes

• cytoplasm

• chloroplasts

• vacuoles

Which statement below best describes the flow of matter and energy through trophic levels?

• Energy is transferred between organisms, and matter is released as heat.

• Matter decreases by 10% as organisms consume one another.

• Energy and matter are recycled by decomposers

• Energy flows from one direction, and matter cycles.

Matter flows through the trophic levels of food webs when carbon dioxide in the atmosphere is converted into a chemical compound through which process?

• Decomposition

• Photosynthesis

• Cellular Respiration

• Nitrogen Fixation

Which one of these organisms would be classified as a tertiary consumer?

• mouse

• frog

• hawk

• snake