APES Math Equations Flashcards
1
Q
percent
A
(part/whole) x 100
2
Q
primary productivity
A
GPP - respiration = NPP
3
Q
mega exponent
A
10^6
4
Q
kilo exponent
A
10^3
5
Q
Rule of 70
A
doubling time =70/(annual growth rate)
6
Q
Crude Death Rate
A
(# of deaths)/1000 people= (DR% / 10)
7
Q
Crude Birth Rate
A
(# of births)/ 1000 people= (BR% / 10)
8
Q
crude
A
per 1000 people
9
Q
growth rate (as a %)
A
((births-deaths)/(pop size)) x 100
10
Q
population density
A
(# of individual)/area
11
Q
percent change
A
(final-initial)/initial x 100
12
Q
population size
A
initial pop + (b+i) - (d+e)
13
Q
Birth rate
A
(# of births/pop size) x 100
