Clear-cutting ________.

The loss of a particular population from a given area (but not the entire species globally) is called ________.

Biodiversity includes:

When a population approaches its carrying capacity, its resources ________.

Where will you find epiphytes growing?

In a forest, the upper level of leaves and branches in the treetops is called the 

Read the following scenario and answer the question below. Human activities, including fossil fuel combustion, farming, and deforestation, are known to increase the levels of carbon dioxide, methane, and nitrous oxides in our atmosphere. Measurable warming of Earth due to these greenhouse gases can alter ecosystem dynamics. In addition to the direct climatic effects on organisms within biomes, warming can lower levels of sea ice and increase precipitation in Arctic areas. Global warming can also melt permafrost in the tundra and increase sea surface temperatures, which could increase the intensity of hurricanes in vulnerable areas. Within communities, climatic change can shift interdependent species “out of sync,” potentially causing indirect loss of species. For example, if pollinators and the plants they pollinate become out of synch, the pollinators may not be able to switch to a different food source, and the plants may not be able to reproduce. If the climate warms significantly, tundra permafrost may melt, which may lead to ________ the community.

The Cuyahoga River in Ohio had been so polluted that it caught fire repeatedly from 1868-1969, including a 1952 fire that resulted in nearly $1.5 million in damages. Amazingly, other rivers in the United States also caught fire during this period. Why didn’t federal laws limiting pollution of rivers and streams prevent this pollution and these fires?

________ involves meeting the needs of the present without sacrificing the ability of future generations to meet their own needs.

European rabbits were introduced into Australia and quickly spread, reproduced, and became a terrible pest. They eat up to $600 million worth of food and pasture crops annually, and have damaged the populations of many native plants and the populations of animals that eat the plants. Twice in the past 50 years, rabbit diseases have been introduced to try to control the population, with some success. This is a case where ________.