Bacteria Can Increase the Earthʹs Temperature by

question 27

Multiple Choice

Bacteria can increase the Earthʹs temperature by

• A) using the greenhouse gas Co₂.
• B) providing nutrients for plant growth.
• C) oxidizing CH4.
• D) producing CH4, which is a greenhouse gas.
• E) generating a great deal of heat in metabolism.

---

Definitions:

Rod Vision

Rod vision refers to the aspect of vision that allows living organisms to see in low light conditions, enabled by rod cells in the retina that are more light-sensitive than cone cells.

Brightness Contrast

The difference in light intensity which makes an object distinguishable from others or from its background.

Mach Bands

An optical illusion in which the contrast between edges where two different shades meet appears exaggerated.

Brightness Contrast

The difference in brightness between objects or parts of objects, which influences the perception of their visual appearance.