JWilliam Schopf Discovered a Fossil Cyanobacterium in Australian Rocks That

question 204

Multiple Choice

J.William Schopf discovered a fossil cyanobacterium in Australian rocks that are 3.5 billion years old.The specific ratio of carbon isotopes (¹³C:¹²C) in the fossil indicated that the organism

• A) produced atmospheric oxygen through photosynthesis.
• B) produced atmospheric carbon dioxide through photosynthesis.
• C) used atmospheric carbon dioxide in photosynthesis.
• D) consumed carbohydrates for energy.
• E) had an extraterrestrial origin.

---

Definitions:

Political Influence

The ability to shape or control the political actions, policies, or decisions of others, often through the use of positional power, resources, or negotiation.

Social Influence

Refers to the effect that the words, actions, or mere presence of other people have on our thoughts, feelings, attitudes, or behaviors.

Industrial Unions

Labor unions that represent all workers, skilled and unskilled, within a particular industry.

Professional Workers

Employed individuals possessing specialized skills, qualifications, and knowledge, typically in fields requiring advanced education.