Chapter 55

Question 1

Ecosystem and Energy

Answer 1

The sum of all organisms living within its boundaries and all the abiotic factors with which they interact
Energy enters ecosystems through sunlight
Energy cannot be created nor destroyed

Question 2

Different trophic levels

Answer 2

primary producer, primary consumer, secondary consumer, tertiary consumer, decomposer

Question 3

Detrivores

Answer 3

Convert the non-living organic matter into energy for themselves

Question 4

Primary Production

Answer 4

The amount of light energy converted to chemical energy(organic compounds)
Gross PP- The amount of light that has been converted by photosynthesis per unit of time
Net PP- GrossPP= R( Energy used for Respiration)

Question 5

limiting nutrient

Answer 5

Nutrient that must be added for production to increase Often times is nitrogen and phosphorous

Question 6

Eutrophication

Answer 6

When there is an increase of nutrientsm, this causes an abundance of phytoplankton and algae to form, causing a decrease in light penetration, decreasing dissolved oxygen

Question 7

Carbon Cycle

Answer 7

Factories ->Carbon in Air -> Trees -> Primary Consumer -> Secondary Consumer

Question 8

Eutrophication

Answer 8

When there is an increase of nutrientsm, this causes an abundance of phytoplankton and algae to form, causing a decrease in light penetration, decreasing dissolved oxygen

Question 9

Trophic efficiency

Answer 9

The percentage of production transferred from one trophic level to the next (10 percent)

Question 10

*Nitrogen Cycle

Answer 10

Nitrogen Atmosphere -> Nitrogen Fixation( bacteria change nitrogen into organic matter(nitrates and ammonia) for plants to use) -> Denitrification (changes the nitrates back into nitrogen gas)