A teacher decides to have her students plant trees to help restore the habitat of a local forest.  It is most important for students to ―

Which environmental impact of small personal watercraft would have the most long-term damaging effect on the environment?

What role might the newly established eucalyptus forest play in this ecosystem?

How do regional changes in the environment cause a widespread change in weather like the one described in the excerpt from Nature News above?

Mass extermination efforts in the first half of the 20th century decimated the gray wolf population.  Which of the following was not an effect on the other existing populations in the Western United States?

A student attempting to identify a conifer sample notices that it contains needle-like leaves. What should the next step be in identifying the organism?

Honeybees feed on and pollinate clover and flowering plants native to the prairie grassland biomes of Texas.  Which of the following organisms provides a similar niche in the Sonoran Desert ecosystem of Arizona?

Tertiary Consumer – The spotted owl feeds on small birds.

The prickly pear cactus was originally imported into eastern Australia in the 18th century for gardens and was later used as natural agricultural fencing.  The cactus quickly became widespread, eventually covering 101,000 sq mi (260,000 km2) of farming land in a 20 ft high jungle of cactus.  Farmers were forced to leave their homes as their land was overgrown.  In 1925, a moth from South America whose larvae eat the cacti was introduced.  The moths eventually wiped out the cactus population, returning the land to its normal balance. Which of the following statements is not a possible consequence of introducing a foreign moth?