How do daily human activities affect the ecosystem?

Daily human activities impact the ecosystem in innumerable ways. Human activities that pollute or disrupt the environment and the ecosystem are most common such as driving a car, or using a chemical product that pollutes the environment, throwing a way trash, littering etc. Humans also can interact with the ecosystem in positive ways by learning and engaging with nature in a way that leaves no harm such as observing birds or going on a hike. In addition humans can impact the ecosystem around them by hunting or killing animal species or plant life in the areas surrounding them which generally has a negative impact on the ecosystem. 

Answer// dinosaurs emerged during mesozoic era;