Animals becoming endangered is a problem that can directly affect humans, and is something with which we should be concerned. Varied groups of species help to maintain balance in our environment. Predator-prey relationships and food chains within ecosystems help to regulate population sizes, and resources, as every organism has another one to restrict it from becoming too prominent in the environment. If spiders went extinct, for example, many other bugs would become overpopulated, and the ecosystems in and around these bugs would become chaotic, as the spiders that were once there eating them and maintaining stable environment conditions are gone. The appearance of animals on lists of endangered species can be partially due to nature, and the way the planet is working, however human actions can speed up the process. Deforestation and pollution due to industrial advancements and factories near rivers or forests are causing many animals to experience habitat loss. When big companies cut down woods to build new factories, many animas lose their homes and have nowhere else to go. Furthermore, excess waste and trash produced by humans can hurt animals and their habitats as well. When landfills become too full, they may spill over into natural areas, or end up being dumped somewhere in the ocean. Oil spills in seas ad oceans also hurt all of the organisms previously living in that area, as the environment becomes inhabitable. Some things cannot be helped, such as natural disasters and freak accidents, however, limiting human pollution and waste can help save animals and the environment.