Changes to the Physical and Biotic Features of the Earth

question 17

Multiple Choice

Changes to the physical and biotic features of the Earth are called land and water transformations. Which of the following is an example of a water transformation?

• A)Clearing land along an urban-growth boundary to allow a city to expand.
• B)Constructing a dam along a river so that an expanding city may increase the availability of drinking water.
• C)Clear-cutting a forest for the lumber needed to build the homes for an expanding city.
• D)Clear-cutting a forest to make cropland to grow the food for an expanding city.

---

Definitions:

Eicosanoids

A group of powerful biochemicals that are derived from fatty acids and have roles in inflammation, immune function, and as messengers in the central nervous system.

Smooth Muscle Contraction

The process by which smooth muscle fibers narrow or tighten, facilitating functions such as the movement of food through the digestive tract.

Daily Requirements

The essential nutrients and energy amounts required by an organism to maintain health and proper functioning.

Total Caloric Intake

The total amount of calories consumed in a given period, important for managing weight and nutritional balance.