Final answer:
Human activity has a significant impact on reducing biodiversity and changing ecosystems. Deforestation, habitat destruction, and climate change are some of the ways in which human activity affects biodiversity. These changes can have both short-term and long-term effects on species and the overall health of ecosystems.
Step-by-step explanation:
Human activity has a significant impact on the reduction of biodiversity and the magnitude, duration, and speed of ecosystem change. The conversion of forests to agricultural land and the destruction of habitats are examples of human-induced processes that lead to biodiversity loss. These changes to ecosystems can have both short-term and long-term effects. In the short term, species may become extinct or endangered, disrupting ecological balance. In the long term, these changes can lead to cascading effects throughout the food web and result in ecosystem collapse. Additionally, global climate change caused by human activity can further exacerbate the loss of biodiversity and alter ecosystems on a global scale.