All of the above factors can contribute to a decrease in biodiversity in an ecosystem. Lack of space or resources, such as food and water, can limit the population size and variety of species that can be supported. A scarcity of mates can result in a decreased reproductive success and genetic diversity. Changes in temperature can also have adverse effects on certain species, leading to decreased population sizes or even extinction. Additionally, there are other factors that can decrease biodiversity, such as pollution, habitat destruction, invasive species, overexploitation, and climate change.
