Most significant influence on the distribution of organisms on land and in the oceans is....
climate patterns on the global, regional, and landscape level
localized climate patterns
Major life zones characterized by vegetation type or by the physical environment
a plot of the annual mean temperature and precipitation in a particular region
The transition from one type of habitat or ecosystem to another, such as the transition from a forest to a grassland.
Events such as a storm, fire, or human activities that change a community.
The narrow top layer of an ocean or lake, where light penetrates sufficiently for photosynthesis to occur.
The part of an ocean or lake beneath the photic zone, where light does not penetrate sufficiently for photosynthesis to occur.
The aphotic and photic zone put together.
The part of the ocean 2,000-6,000 meters below the surface.
Made up of sand and organic and inorganic sediments the benthic zone is occupied by benthos.
Communities of organisms in the benthic zone whose major source of food is detritus.
Dead organic matter.
A narrow stratum of abrupt temperature change in the ocean and in many temperate-zone lakes.
The mixing of waters as a result of changing water-temperature profiles in a lake.
The movement of individuals or gametes away from their area of origin or from centers of high population density.