The Figure Below Illustrates Distance and Diffusion Time;note That the Time

question 47

Multiple Choice

The figure below illustrates distance and diffusion time;note that the time required is NOT directly proportional to the distance.Why,for the insect and mouse,might an increase in distance of 20-fold require an increase in time of 60-fold?

• A) Oxygen reacts chemically as it diffuses,becoming less diffusible as it travels greater distances.
• B) Larger animals are warmer than small animals;the rate of diffusion is dependent,in part,on the temperature.
• C) As oxygen disperses into a large area,its concentration declines;the rate of diffusion is dependent,in part,on the difference in concentration between two locations.
• D) Organisms are able to manipulate the rate of diffusion so that the delivery of oxygen matches their metabolic activity levels.

---

Definitions:

Final Goods

Refers to products that have completed the manufacturing process and are purchased by consumers without further processing.

Margin

The difference between the cost of a product or service and its selling price.

Economics

The efficient allocation of the scarce means of production toward the satisfaction of human wants.

Input

Resources used in the production process, including labor, materials, machinery, and other factors of production.