What Evidence Suggests That Life Was Common on Earth Within

question 43

Multiple Choice

What evidence suggests that life was common on Earth within a billion years of its formation?

• A)Life must have formed early in order to produce the variety of lifeforms seen today.
• B)rocks older than 3.85 billion years with the carbon- 12 to carbon- 13 ratio typical of living organisms
• C)3)5 billion year old rock structures formed by microbes called stromatolites
• D)A and C
• E)B and C

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Definitions:

Medical Prescriptions

Written orders from a licensed healthcare professional that authorize a patient to be provided a medicine or treatment.

Psychiatrists

Medical doctors specializing in the diagnosis, treatment, and prevention of mental illnesses, capable of prescribing medication.

Counseling Psychologists

Professionals who specialize in offering therapy to help individuals cope with emotional, physical, and mental health issues.

Psychotherapy

A form of treatment for mental health issues that involves talking with a therapist to understand and overcome problematic thoughts, feelings, and behaviors.