Zack is four years old and can do cartwheels, back flips, back hand springs, and one-handed cart wheels. he has had no formal training to develop these gymnast skills. all represent:

The correct answer is gross motor skills.
Gross motor skills are physical skills which require the movement of the entire body and the involvement of a wide range of the core muscles. These skills are used to perform everyday actions such as walking, running or kicking for example.

Gross motor skills are different from fine motor skills which involve smaller actions such as tasting things or picking up small objects.

Humans impact the environment, which can, in turn, have an effect on human health. Pollution is caused by human activity, and it also affects human health. Air pollution can cause respiratory problems and water pollution can lead to digestive problems. As human health is affected by these issues, concern increases and policies are enacted that address the causes of the issues. These policies do benefit the environment, but are, in part, brought about by concerns over human health.

Explanation: