Which of the following is correct in regards to the geologic time scale?
A) An epoch is composed of one or more periods.
B) The largest defined unit is an eon or, according to some, a supereon.
C) An era is the smallest unit of geologic time.
D) Every period is composed of 2 epochs.
B
Environmental & Atmospheric Sciences
You might also like to view...
Approximately ________ of the world's population lives north of the equator (in the Northern hemisphere)
A) 10% B) 25% C) 50% D) 75% E) 90%
Environmental & Atmospheric Sciences
The first domestication of crops and animals occurred about ________ years ago
A) 5 million B) 2 million C) 500,000 D) 100,000 E) 10,000
Environmental & Atmospheric Sciences
Which property most inhibits convection?
A) elasticity B) viscosity C) density D) rigidity
Environmental & Atmospheric Sciences
In addition to fossils, what are other types of evidence for evolutionary theory?
Environmental & Atmospheric Sciences