Which of the Following Did Early Methanogens Use from the Early

question 62

Multiple Choice

Which of the following did early methanogens use from the early atmosphere to generate energy?

• A) CO₂ and H₂
• B) H₂O and O₂
• C) CH4 and CO₂
• D) N₂ and O3
• E) O₂ and H₂

---

Definitions:

First-degree Burn

A mild burn characterized by redness and pain that affects only the outer layer of the skin, known as the epidermis.

Swelling

The enlargement of a body part due to the accumulation of fluid or inflammation in tissues.

Basal Cell Carcinoma

A type of skin cancer that begins in the basal cells, characterized by slow growth and seldom spreading to other parts of the body.

Waxy Sheen

A smooth, glossy appearance on surfaces that resembles the texture or luster of wax.