what are ice ages?

Question

A)periods of time glaciers receded to cover only the poles.
B)eras during which earths orbit kept the planet far from the sun.
C)periods of time when glaciers covered much of the earth.
D)times when human and animal life thrived in high latitudes.
.I chose letter (C).
When the death rate is higher than birthrate,_________ exists.
A)zero population growth
B)doubling time
C)population density
D)negative population growth
.I chose letter (B).
Every culture creates a social system by:
A)treating each person equally
B)Treating its members as if they had to earn privileges
C)organizing its members into smaller groups
D)organizing its members into one large group
.I chose letter (C).

Answer 1

first and third still correct.

Answer 2

Your first and third answers are correct.

The other answer is wrong. When a society has more deaths than births, it can't be doubling time. Please try again.