Author Question: The role of CFCs in the depletion of stratospheric ozone was first hypothesized in the 1970s. ... (Read 50 times)

saliriagwu · **on:** Jul 14, 2018

The role of CFCs in the depletion of stratospheric ozone was first hypothesized in the 1970s.

Indicate whether the statement is true or false

Question 2

Discuss the concept of the biome, including the various factors used to characterize one.

What will be an ideal response?

vickybb89 · **Reply #1 on:** Jul 14, 2018

Answer to Question 1

TRUE

Answer to Question 2

The biome concept defines world into large biogeographic regions based on plant communities and determined mainly by vegetation life forms and community characteristics as they relate to climate. This is in contrast to Earth's biogeographic realms, which are defined based on floral and faunal assemblages. A biome, by definition, is a large, stable, terrestrial or aquatic (though mostly terrestrial) ecosystem classified according to the predominant vegetation type and the adaptations of particular organisms to the environment. The boundaries of biogeographic regions are usually determined by climatic and topographic barriers. There is not a single universal classification method for the world's biomes, so classifications vary depending on source. Given the extensive transition zones between biomes and the classification methods based on vegetation associations, the delineation is somewhat arbitrary.