Download Env. Sci. Midterm Exam Review

Env. Sci. Midterm Exam Review
Renewable resources
Hunter-gatherer, Agricultural, Industrial Revolution
Biodiversity - # and variety of species in an area
Loss of biodiversity concern, (food & oxygen)
Law of supply and demand – availability, worth
Variable – factor of interest
Control – does not receive treatment
Observation, hypothesis, conclusion
Mean = average
Env. Sci. Midterm Exam Review
Ozone layer located in stratosphere
Radiation, convection, conduction
Gravities effects
Greenhouse effect
Hydrosphere, biosphere
Ice caps and glaciers - most of Earth’s fresh water
Earth – closed for matter, open for energy(sun)
Biodegradable, breaks down naturally
Ecosystem
Sun provides energy in most ecosystems
Env. Sci. Midterm Exam Review
Organisms, species, populations, communities
Survival – have or lack certain traits, reproduce
Coevolution – response to long-term interactions.
6 Kingdoms for environmental, 5 for biology
Bacteria convert nitrogen into a usable form
Biotic and abiotic
Bacteria and fungi both break down dead organisms
Bacteria have only cell walls, no nuclei
Protists and plants use energy from sun to make food
Env. Sci. Midterm Exam Review
Bacteria, fungi and plants all have cell walls
Angiosperms and gymnosperms
78% nitrogen and 21% oxygen
Energy consumed stored in fat and sugar molecules
Plants – photosynthesis – carbon back to ecosystem
Carbon sink – i.e. limestone rock
Biomes – usually described by their vegetation
Tundra, grasslands, tropical rain forest
Latitude = distance N & S of equator; longitude
Env. Sci. Midterm Exam Review
Temperature and precipitation = plants in a biome
Estuaries – fresh nutrients from rivers & oceans
Flagella – phytoplankton adaptation to prevent sinking
Littoral, abundant life – benthic, bottom/deep
Water absorbs light, no photosynthesis in deep water
Only 10% stored energy available on food chain
Cellular Respiration – (photosynthesis in reverse!)
produces organism’s energy, with oxygen as the primary
reactant.