Exam 3: Biodiversity

A group of scientists are studying the biodiversity of a habitat. Their data is in the chart below. Using the Simpson Diversity Index, they conclusion that location _______ is more diverse because it has greater species _______.

The complete loss of all individuals of a species is defined as

Which of the following statements about biodiversity is false?

Scientists studying how microbes interact with each other, decaying organic matter, the soil, and greenhouse gases such as carbon dioxide and methane, are most concerned with

A scientist is studying biodiversity in an ecosystem. She is focusing on the adaptations of species to survive in the habitat. She is mostly likely concerned with

In many countries across Asia, areas considered to be natural buffers against hurricane-force winds and flooding have been removed to facilitate economic development. However, during the 2004 tsunami, these areas were the hardest hit. This scenario illustrates the importance of biodiversity to humans through

Predict what could occur to the biodiversity of a tropical rainforest if a native plant is discovered that cures all forms of cancer. Scientists consequently try to create a synthetic form but it does not seem to work on all forms of cancer, nor have scientists been able to cultivate the plant.

Suppose there is an island nation where the people depend on fishing for their economy and food supply. The fish populations have decreased. How would one help the island nation with their problem?

What are carbon sinks?

The graph below shows organisms found in and around a pond. Choose the best interpretation of the data. (Source: http://www.aquatax.ca/skAquaticInsectInfo.html)

Why are keystone species important to an ecosystem and what can occur if they are removed? Use an example to explain your answer.

Which of the following are ways that humans directly benefit from the diversity of species due to living organisms providing for human needs?

Which data support the statement "The planet is on the brink of a large extinction, much like the dinosaurs."?

Which of the following statements about measuring species richness and species evenness is true?

When phytoplankton (organisms that photosynthesize) in the oceans absorb carbon dioxide, this is considered what type of biodiversity benefit?

Many argue that species can recover when there has been a decline in their populations. Which of the following statements regarding mass extinctions is false?

In the forests of the Sierra, Rocky, and Cascade Mountain ranges the pine beetle has killed large numbers of whitebark pine trees. In some areas up to 100,000 trees are falling daily. The beetles have survived and multiplied due to warmer winters. The entire ecosystem is affected and the tree species are threatened. Which major threat to biodiversity below is most likely the cause?

Why has the loss of biodiversity become a significant issue for scientists, policy-makers, and the general public?

Examine the map of biological "hot spots" below and choose the best conclusion of the data shown on the map.

Which human activities can increase the chances of diseases such as malaria, yellow fever, and other diseases carried by vectors like mosquitos?