If one of the main sources of food became extinct.
well a wildfire can cause many changes in a habitat. It can cause a decreasing in animals, and/or vegetation. A population of deer (just a random animal) can decrease in an event of a wildfire. Vegetation, trees may be burned down. but yes there are many changes:)
A decrease in the marsh willow herb population in an area is likely to be caused by environmental changes such as increased water salinity levels, habitat destruction due to human activities, or competition from invasive species that outcompete marsh willow herb for resources. These changes can disrupt the plant's growth, reproduction, and ability to thrive in its habitat.
Possible causes for a decrease in organisms in a habitat include habitat destruction or degradation, changes in environmental conditions such as extreme weather events, pollution, competition with other species, or predation. These factors can lead to a loss of resources, decline in population size, or displacement of the organisms from their habitat.
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 general term for an environmental factor that causes a population to decrease is a limiting factor. Some examples are emigration and mortality, a lack of resources, natural disasters happen which makes people scared to to live there so the people flee, and habitat loss.
It may cause a flooded
an increase in the spider population
death
Humans hunt the deer and cause the deer's population to decrease. We also take away their habitat by chopping down forests.
deforestization or the destruction of owl habitats could cause a decrease in an owl population. This would then mean the owls prey, such as a field mouse, would flourish and increase in population.