a. immigration and emigration c. decreased birthrate and emigration
b. increased death rate and immigration
c. decreased birthrate and emigration
d. emigration and increased birthrate
2007-06-03 06:56:16 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Biology
C - the rest cancel each other out.
2007-06-03 06:59:54 · answer #1 · answered by Lady G 4 · 0⤊ 0⤋
C. decreased birth rate and emmigration...because if there is a decreased birth rate that means not as many people are being born and so there is no population increase and also emmigration because people are leaving the certain are and that would decrease the population as well.
2007-06-03 07:00:03 · answer #2 · answered by Rohini 2 · 0⤊ 0⤋
a population can decrease because it runs out of food or because a new preditor comes into the habitat.
2007-06-03 06:59:55 · answer #3 · answered by Carol 1 · 0⤊ 0⤋
These are easy questions. Please just think about what these words mean. Look them up if you don't know. You CAN figure it out if you apply yourself.
This is basic biology. Just THINK about it.
2007-06-03 07:00:52 · answer #4 · answered by Lady Geologist 7 · 0⤊ 1⤋
c
2007-06-03 07:11:44 · answer #5 · answered by starrygirl 4 · 0⤊ 0⤋
c
2007-06-03 07:03:31 · answer #6 · answered by RentHead94 3 · 0⤊ 1⤋