Geography Glossary - B
biodiversity
The number of species present in a given ecosystem
biogeography
The branch of geography that studies the distribution of plants and animals on the earth
biosphere
The plant and animal life on the earth
birth rate (crude birth rate)
The number of live births per 1000 individuals annually within a population
bullet trains
High-speed trains, first introduced in Japan. So called due to their speed and the aerodynamic shape of the trains themselves