a reduction in competition
More food is available as grain is harvested.
The water table will drop.
: High rains increase the water supply.
Birth Control is what is most likely to limit human population growth.
Competition between organisms would most likely cause the phenotype frequency in a population that changes each generation.
All the prey being eaten.
Decrease.
An increase in prey availability is most likely to cause an increase in a predator population as more food leads to better survival and reproduction rates for the predators. Additionally, a decrease in competition from other predators or a decrease in predation pressure from other sources can also contribute to a rise in predator numbers.
The aliens start attacking them more
There may be many different answers for this question, but the most obvious would seem to be that population increases when birth rates are high. Similarly, in countries where fertility rates are high then population is very likely to increase.
The mouse population will increase. (apex)
The preatador population will most likely increase due to an abundant food source.
Physical features such as fertile land, access to water sources like rivers or coastlines, and mild climates are likely to have the highest population density. These features support agriculture, transportation, and livability, making them attractive for human settlement and development.
Let's put it this way. Say you have a killerwhale and a penguin. Killerwhales are major predators to penguins. Now, say the killerwhale population increases. The penguins would be eaten more by the killerwhales, then causing a population decrease for the penguins. If the population decreases, they're won't be enough penguins, and they most likely will become extinct, as well as causing a population decrease for the killerwhales as well. Whereas, vis versa, they're were a killerwhale population decrease. The penguins would be less hunted, therefore, creating a population increase for the penguins.
More food is available as grain is harvested.
The water table will drop.
More food is available as grain is harvested.