probably because they are an easy meal for hunters (animal hunters not people)
A low birth rate and environmental hazards are two things that can cause a population to decrease.
The aliens start attacking them more
A population of an animal would decrease because of animal testing. 3/5 people agree.
Immigration, decrease in infant mortality, increase in birth rate, decrease in mortality.
Since World War II Polish population was increasing, but in 2013 it started to decrease.
A decrease in the birth rate will cause a decrease in population over time.
A low birth rate and environmental hazards are two things that can cause a population to decrease.
A low Birth Rate and environmental hazards are two things that can cause a population to decrease.
The population is stable, though the public can find out very little of the meerkat population regularly. The meerkat population has been fluctuating, and is categorized as Least Concern on the Species List. :)
an increase in the spider population
Polluted water can cause a decrease in animal population. This is possible if the pollutant is toxic and harms creatures in the water or those that drink the water.
The shrimp population will increase which will cause an increase in the squid population.
Water pollution.
There are many contributing factors that could be the cause for a decrease in fox population. Over population, not enough food, disease, or over hunting or poaching any of these could be the reason for a decrease in the population.
it is an environmental factor that causes a population to decrease.
The name meerkat came from the Afrikaans (Dutch population of South Africa)!
Changing the environment can decrease the population density or just not giving the organisms enough nutrients can cause populations to decrease. (: