Nutrients

Question 1

community

Answer 1

an ecological is an association of species within a defined area that interact with one

Question 2

Nutrient pollution

Answer 2

when excess nutrients (nitrogen/phosoprus) are added to an aquatic system –> often leads to eutrophication
-threat facing aquatic systems

Question 3

primary producers

Answer 3

• can use solar energy to create organize tissue out of basic nutrients in the environments
• take up nutrients to produce biomolecules for growth and production
  -ex. plants
  -an organism that synthesizes its own food
• organisms that can synthesize organic molecules from inorganic material
  
  • rely on solar energy to power chemical reactions during photosynthesis
    -bottom of trophic level

Question 4

eutrophication

Answer 4

-lakes with large populations of phytoplankton → eutrophic
-eutrophication → extra nutrients = added to a lake
-if nutrient levels become high → algal blooms → lake communities can suffocate
-the process by which an entire body of water, or parts of it, becomes progressively enriched with minerals and nutrients, particularly nitrogen and phosphorus. It has also been defined as “nutrient-induced increase in phytoplankton productivity
-algae blooms –> eat up oxygen, kill fish

Question 5

Limiting Nutrients

Answer 5

a nutrient who’s addition to a system results in increased growth in one or more of the primary producer populations

Question 6

Nutrients

Answer 6

• elements required by living organisms
  
  • Elements = building blocks from which organisms are built; make up the energy rick molecules that provide fuel for living organisms to function

Question 7

hypoxic

Answer 7

low in oxygen

Question 8

herbivores

Answer 8

-consumers
-middle of trophic level
- - eat primary producers
- predators → eat herbivores or other predators

Question 9

predators

Answer 9

-top of trophic level

Question 10

biomagnification

Answer 10

mercury makes its way up the food chain → becomes more concentrated at higher trophic levels