Bio Sem 1 Final Review

Variety of life in an area or ecosystem

• 
  biodiversity

• abiotic factors

• 
  homeostasis

• trophic cascade

Top-down effects of a trophic level being removed impacting the entire ecosystem

• 
  biodiversity

• abiotic factors

• 
  homeostasis

• trophic cascade

non-living

• 
  biodiversity

• abiotic factors

• 
  homeostasis

• trophic cascade

heterotroph who regulates the health of an ecosystem; if removed, a large negative effect is caused throughout the ecosystem

• 
  biodiversity

• abiotic factors

• 
  homeostasis

• trophic cascade

living

• 
  biodiversity

• biotic factors

• 
  homeostasis

• trophic cascade

regulation of internal environment with changing external environment; keeps a population steady

• 
  biodiversity

• biotic factors

• 
  homeostasis

• trophic cascade

How can humans positively impact an ecosystem?

• 
  increase poaching

• 
  implement laws

• remove trees for farm land

• create protective barriers for the conservation of species

adaptation

• different hair colors in the classroom

• fish have 1000 babies

• 
  tusks on male elephants allows them to fight

• child looks a bit like mom & dad

What abiotic factors influence a population?

• decreasing O2

• low food supply

• diseases

• limited space

How would the carrying capacity of the fish population be affected if there was less environmental resistance? (aka limiting factors)

• Decrease

• Increase

• Stay the same

• Fluctuate