$$\textbf {\color{#19804f}{Describe}}\text { how Tilman's experiments demonstrate the effects of biodiversity on productivity and stability. }$$

Why is biodiversity a sign of healthy ecosystems?

If Earth has 150,100,000 $km^2$ of land area, how much land area is included in the biodiversity hot spots?

(a) Determine expressions for the slope $v^{\prime}(x)$ and the deflection $v(x)$ in the segment $A B$; and (b) determine the maximum upward deflection of the beam.

Explain why measuring biodiversity is difficult.

In mid-2006 the population of the United States was nearly 300 million. ${ }^4$ Can our own natural resources successfully support 300 million people? How do the imported goods that maintain our level of economic activity and standard of living affect the global environment? How fast is our population growing? Which segment of our population is growing the fastest? How much of our growth is due to legal immigration? Illegal immigration?

Obviously, the precise human carrying capacity of an area is very difficult to determine, especially for a country as large and diverse as the United States. Despite the difficulty, it is useful to estimate human carrying capacity so that policy makers can act to ensure that our environment is able to support human life and natural biodiversity into the future.

Select one of the items in the following list and write a few sentences arguing that it is a carrying capacity issue, and then argue that it is not.

c. Increasing vehicular traffic and "road rage" incidents

$$\textbf{ What's Wrong With These Statements?}$$

$$\textit{\ Briefly explain why each statement is inaccurate or misleading.}$$

$$\textbf{\ \ a.}\text{ In the water cycle, all water returns to the atmosphere by transpiration.}$$

$$\textbf{\ \ b.}\text{ Poaching threatens biodiversity because it releases large amounts of pollution.}$$

$$\textbf{\ \ c.}\text{ When a spider eats a fly, the spider will use most of the energy stored as biomass in the fly to build new biomass of its own.}$$

Use an example to explain one reason that people value biodiversity.

Why is biodiversity worth preserving?

Why do uneven-aged stands of trees offer more biodiversity?

For the uniform simply supported beam in Fig. (a) determine the equation of the deflection curve, $v(x)$; (b) determine the slope, $\theta_A$, at the left end; and (c) determine the maximum deflection, $\delta_{\max } \equiv \max |v(x)|$. Solve by integrating the second-order differential equation for deflection. (Note: You may have to use a trial and error solution to determine where the maximum deflection occurs.)

Most of the loss of biodiversity in ecosystems is caused by?

Which biome has the least amount of biodiversity?

In your own words, define the term. biodiversity