Sem 1 Final Flashcards
Characteristics of ecosystems with high biodiversity
- large number of different species
- greater genetic diversity
Two human activities that lower biodiversity and why
- logging because it causes habitat fragmentation and habitat loss
- introduction of invasive species because displaces natives
how to combat logging and invasive species
- replant trees
- education for preventing invasive species from getting introduced
one naturally occurring cause of biodiversity loss
long term climate change can cause warmer or cooler temperatures
two benefits of biodiversity
- pollination by insects and others
- control of pest species
a biological process that carbon is removed from the atmosphere
photosynthesis - plants take in carbon and convert it to glucose
a biological process that carbon is returned to the atmosphere
cellular respiration - breaks down glucose and release co2 to the atmosphere
how is carbon incorporated into ocean sinks
- carbon dioxide can be taken in by phytoplankton for photosynthesis
- atmospheric carbon can dissolve into the ocean water
one terrestrial sink that stores carbon for many years
limestone and glaciers
two human activities that increase carbon in the atmosphere
- deforestation - reduces a carbon reservoir
- biomass burning releases carbon
one problem from more carbon
consequence of the problem
ice caps and glaciers melting
will cause flooding and habitat loss
how is phosphorus different from the carbon cycle
doesn’t have a gaseous phase
why is phosphorus important to organisms
needed for DNA
where is ogllala aquifer
great plains, nebraska, kansas, texas
which irrigation has least evaporation
drip irrigation
