chap 52(ecology)

Question 1

abiotic factors that limit the distribution and abundance of organisms

Answer 1

sunlight, temperature, rain, wind, soil, moisture levels, salinity, light, pH

Question 2

biotic factors that limit the distribution and abundance of organisms

Answer 2

predation, competition, parasitism, mutualism (producers, consumers, decomposers)

Question 3

Temperature and water levels influence ___

Answer 3

Temperature and water levels affect the distribution of the major terrestrial biomes the most
it varies w/ latitude & topography

Question 4

temperature and animals

Answer 4

• most animals are ectotherms
• temps outside their envi. range expend E by regulating their internal temperature

Question 5

latitude & temperature

Answer 5

temps are warmer closer to the equator and cooler when near the poles

driest area - 30* N and S

Question 6

Topography & temperature

Answer 6

temp decreases with height

Question 7

Water’s influence in distribution of terrestrial biomes and organisms’ range

4

Answer 7

• low water levels - species desiccate
• affects salinity of water
• ocean acidification (pH)
• affects CO2 concentration

Question 8

how temperature limits the ranges of organisms at different
time scales

Answer 8

• affectes biological processes - enzymes

Question 9

how sunlight limits the ranges of organisms at different time scales

Answer 9

• provides energy that drives most of the ecosystem
• lack of it limits distribution of photosynthetic species
• too much damages DNA and proteins

Question 10

how geographic barriers limits the ranges of organisms at different time scales

Answer 10

• geographic disturbances limits movement
• barriers to dispersal affect ranges (oceans and continents are in the way)
• distribution patterns are caused by climate, evolutionary history, and dispersal

Question 11

how global warming influences the distribution of species

Answer 11

• increase CO2 = hotter temps
• decreases pH of oceans
• its occurring too rapidly for species to evolve

Question 12

ecology

Answer 12

study of how living things interact w/ each other and their environment

Question 13

climate

Answer 13

average weather conditions in an area over a PERIOD OF TIME

Question 14

biome

Answer 14

community of abiotic and biotic factors

Question 15

abiotic

Answer 15

non living things

Question 16

biotic

Answer 16

living things

Question 17

ectotherm

Answer 17

animal whose body does not produce much internal heat

Question 18

endotherm

Answer 18

organism who is internally warmed by heat-generating metabolic process

Question 19

species range

Answer 19

the complete area of the Earth where specific individuals of a species live at

Question 20

species distribution

Answer 20

areas of the world where a species lives and measures the abiotic factors that impact their distribution