The Atmosphere and Seas of the Early Earth Lacked Oxygen

question 38

Multiple Choice

The atmosphere and seas of the early Earth lacked oxygen.What kind of organisms could NOT have lived under those conditions?

• A)obligate aerobes
• B)obligate anaerobes
• C)facultative anaerobes
• D)chemoautotrophs
• E)cyanobacteria

---

Definitions:

VCD

Vocal Cord Dysfunction, a condition where the vocal cords involuntarily close during inhalation or exhalation, causing breathing difficulties.

Gonorrhea

A sexually transmitted infection caused by the bacterium Neisseria gonorrhoeae.

HPV

Human Papillomavirus, a common sexually transmitted infection that can cause genital warts and cervical cancer.

Pea-Sized Glands

Refers to small glands in the body, like the pituitary gland, that are approximately the size of a pea and produce various hormones.