Human activity can have a massive impact on natural ecosystems. Humans can affect the soil by causing erosion when certain farming methods are used. They can have impacts on populations of plant and animal species by destroying their habitats for development. They can affect the water composition of oceans, lakes, rivers, streams and ground water with pollution and chemicals. Humans can also have an impact on the temperature when the gases they pollute the air with cause a green house effect and trap heat near the Earth’s surface. It is important for humans to be aware and conscious of the affects we have on the ecosystems around us and we try not to disturb the delicate balance of nature.