Sampling - counting the number of organisms in a small area and multiplying to estimate the number in a larger area
Mark & Recapture - capture an organism & release it to remix with population. Then recapture some more in that area to determine population size. Formula is as follows: R (marked recaptures) / C (total in second sample) = M (marked initially) / N (total pop. size)
Indirect Observation - estimating the population size by tracks, nest or other animal signs in an ecosystem.
Direct Observation - count all members of a population in an ecosystem
young adults in the military and in collegs towns
i dont know but wish i did
Compositional theory is the theory that examines the ways in which the composition of a city's population influences life in the city. Compositional theory also focuses on the differences between urban and rural areas.
they won the war
Two ways that a population can experience a positive growth: # Increasing/having tourist sites # Letting the economy of the city grow rapidly
parasites predation weather and clement are four ways natural factors can change a populations size.
By Genocide, and by war..
competition
you can just go and count all of them stupid!
There are many different ways, such as dying out or being alone with no mate.
I realized that fapping is the best.
young adults in the military and in collegs towns
force's can change the speed, shape, size and direction of an object.
A) Another Genocide (The Holocaust) B) A really big Asteroid
One way is what is called a "Mark-Recapture" a study on how large the population is.Please see related link below!
ewan
The ways in which population densities fluctuate-increasing, decreasing, or both over time-is the subject of population dynamics. Population density measures the number of individuals per unit area, for example, the number of deer per square kilometer. Although this is straightforward in theory, determining population densities for many species can be challenging in practice.