terrestrial biomes are characterized by the _(what is found in biomes)growth forms of the dominant vegetationbiological zones in freshwater ecosystems are associated with _of the water (5)-velocity
-depth
-temperature
-clarity
-chemistrymarine biological zones are determined by_(3)-ocean depth
-light availability
-stability of the bottom substratehow is North America in diversity (especially in plains) today vs before?-today, the Great Plains of North America have very low diversity:
-In North America when the last Pleistocene continental glacier receded, the Great Plains supported a diverse megafaunawhat happened about 10,000-20,000 years ago in north america regarding its diversity? reasons (2)?-About 10,000-13,000 years ago, many of the North American large mammals went extinct very rapidly.
-Nearly all the animals that went extinct were large mammals.
-Causes of the extinction are a mystery. Hypotheses include rapid climate change and the arrival of humans in North America.biosphere-is the zone of life on Earth, where life exists
-Living things are found on every part of the Earth, from high mountains to deepest oceans and extreme environments. But most occur within a thin layer of Earth's surface, from the tops of trees to the surface soil layers, and within 200 meters of the surface of the oceans.between what two layers the biosphere is found?-it is sandwiched between litosphere, the earth's surface crust and upper mantle, and the troposphere, the lower layer of the atmosphereBiomes (what are them and how they are categorized)-are large-scale terrestrial communities shaped by the physical environment.
-These areas have similar climate, temperature, precipitation reigns, and similar vegetation
-categorized by dominant plant forms and characteristics such as leaf deciduousness or succulence.what is a good indicator of climatic conditions and disturbances in biomes? why?-Plants occupy sites for a long time and are good indicators of climatic conditions and disturbances.
-they are sensitive to temperature and precipitationlist the 7 major plant growth forms1. sclerophyllous shrubs
2. deciduous trees
3. grasses, sedges
4. cacti and shrubs; succulent stems or leaves
5. needle-leaved evergreen trees
6. evergreen broad-leaved trees
7. forbs
