Pls answer this question fast

The four factors that can affect population size are fertility rate, mortality rate, immigration and emigration.

   Fertility rate and mortality rate are often grouped together as are immigration and emigration. The fertility rate of a population refers to the average amount of children that women have throughout their lifetime, adjusted to births per certain amount of the population in the year.  

   Finally, immigration is a count of how many foreigners become residents of the The opposing factor to fertility rate is mortality rate, which is equal to the typical amount of deaths per the same amount of the population in the year.

   Country, while emigration is a count of how many residents leave the country.

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).