Biotic and Abiotic Factors

Cards (21)

  • What are the two types of factors that affect a community?
    Biotic and abiotic factors
  • What are biotic factors?
    Living parts of an environment
  • What are abiotic factors?
    Nonliving parts of an environment
  • What are the four different biotic factors mentioned?
    1. Availability of food
    2. Arrival of a new predator
    3. Competition between species
    4. New pathogens
  • How does the availability of food affect a community?
    If food availability falls, organism numbers fall
  • What effect does a new predator have on prey species?
    It can cause the prey population to fall
  • How can competition between species affect populations?
    Outcompeted species may become extinct
  • What happens if a new pathogen emerges?
    It can wipe out a population of a species
  • What are the seven different abiotic factors mentioned?
    1. Light intensity
    2. Temperature
    3. Water
    4. pH and mineral content of soil
    5. Wind intensity and direction
    6. Carbon dioxide
    7. Oxygen
  • How does light intensity affect plants?
    Low light reduces photosynthesis rate
  • What happens if the temperature of an environment changes?
    Species distribution may change
  • Why is water an important abiotic factor?
    Both plants and animals need water to survive
  • How does soil pH affect plants?
    Many plants can't grow in extreme pH
  • What mineral is essential for plants to make proteins?
    Nitrate
  • How can wind intensity affect plants?
    Strong winds can cause water loss
  • Why is carbon dioxide important for plants?
    It is needed for photosynthesis
  • What happens if carbon dioxide levels fall?
    The rate of photosynthesis can decrease
  • Why is oxygen important for organisms?
    It is needed for aerobic respiration
  • How can dissolved oxygen levels in water change?
    They can fall on hot days
  • What can happen to aquatic organisms if dissolved oxygen levels fall?
    It can be harmful to aquatic organisms
  • Where can students find questions on biotic and abiotic factors?
    In the vision workbook linked in the video