Humans have a huge impact on ecosystems today. Talk about why we can no longer study most ecosystems that have not been touched by humans. Talk about some of the large scale issues we are causing in our environment and ecosystems today.

This is because of the increased human population that is widely dispersed and lives in most parts of the world. Anthropogenic activities by humans have caused an increase in global temperatures and climate change especially due to the burning of fossil fuels for energy.