Biodiversity is the variety of different types of life found on Earth. It is a measure of the variety of organisms present in different ecosystems. This can refer to genetic variation, ecosystem variation, or species variation (number of species) within an area, biome, or planet. Biospheres the global sum of all ecosystems. It can also be termed as the zone of life on Earth, a closed system (apart from solar and cosmic radiator and heat from the interior of the Earth), and largely self-regulating. In this case its the lat and the long spacial variation of temp affects climates and then distribution of biodiversity.
The endosymbiotic theory deals with the origins of mitochondria and chloroplasts, two eukaryotic organelles that have bacteria characteristics. Mitochondria and chloroplasts are believed to have developed from symbiotic bacteria, specifically alpha-proteobacteria and cyanobacteria, respectively.
<span>As a glacier moves over the landscape, it carries bits of material in the ice that scratch the bedrock and ground surface. It also carries away boulders and large objects.</span>
