Introduced during Lamar’s presidency, red backs were . a.
battle plans
b.
educational reforms
c.
a paper currency
d.
a cattle breed

C. A Paper Currency

Explanation:

Can't really explain it, it's a fact.

name two ways organisms join a population and two ways organisms leave a population. two ways organisms join a population are birth rate and immigration. two ways they leave are death rate and emigration.

explanation:

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.