The red line represents the actual bear population, while the blue line shows the predicted population. Why doesn't the actual bear population ever match the exact carrying capacity?

Explanation:

Predicted populations are ideal circumstances and do not account for many of the external factors that can affect the data in the current study. Therefore, many times the actual population is either lower than the population or exceeds it but is almost never exact. This can be due to weather conditions that cause a large portion of the population to die out, excess food, hunters, etc. Many factors can drastically affect whether the population is dying or thriving.

the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.