Finals Flashcards
Variation of life forms within a given ecosystem, biome or for the entire Earth
Used as a measure the health of the biological systems
Biodiversity
Defined area in which a community lives with interactions taking place among organisms between the community and its nonliving physical environment
Formed by the interactions between all living and nonliving things
Ecosystem
Large region characterized by a specific kind of climate and certain kinds of plant and animal communities
They can be freshwater, marine (saltwater), terrestrial, temperate, tropical, etc.
Biomes
Diversity of all living organisms, habitats, and ecosystems on land, in freshwater, in the ocean and in the air
UN Biodiversity convention
different habitats, niches, species interaction
Ecological and functional diversity
Each species occupies a _____ in the community
The role the species plays, and includes the type of food it eats, where it lives, where it reproduces, and its relationships with other species
Niche
Different kinds of organisms, relationships among species
Species Diversity
Different genes and combinations of genes
Genetic Diversity
How much Biodiversity?
1.7 - 2.0 million species
Estimate: 100 million
A thin envelope of gases surrounding the earth
Atmosphere
The __________ is the atmospheric layer closest to the earth’s surface extending only about 17 kilometers (11 miles) above sea level at the equator and 8 kilometers (5 miles) over the poles.
troposphere
The atmosphere’s second layer is the __________, which extends from about 17 to about 48 kilometers (from 11 to 30 miles) above the earth’s surface.
stratosphere
__________ consists of short-term changes in atmospheric variables, such as the temperature and precipitation in a given area over a period of hours or days.
Weather
__________ is determined by the average weather conditions of the earth or of a particular area, especially temperature and precipitation, over periods of at least three decades to thousands of years.
Climate
Weather: __________
Climate: __________
short term
long term