Science - 2018-19

LS.10 - Changes in Ecosystems, Communities, Populations, & Organisms

The student will investigate and understand that ecosystems, communities, populations, and organisms are dynamic, change over time, and respond to daily, seasonal, and long-term changes in their environment. Key concepts include 

a) phototropism, hibernation, and dormancy;

b) factors that increase or decrease population size; and

c) eutrophication, climate changes, and catastrophic disturbances.

Bloom's Levels:  Analyze; Understand

Adopted: 2010

BIG IDEAS

  • Both human activities and natural events can have major impacts on the environment.

  • I can explain why bears hibernate.
  • I can predict what will happen to the mouse population if more hawks are introduced to the community.
  • I can predict what will happen to the local deer population if the climate continues to change.

UNDERSTANDING THE STANDARD

  • Organisms may exist as members of a population; populations interact with other populations in a community; and communities together with the physical environment form ecosystems.
  • Changes that affect organisms and communities over time may be daily, seasonal, or long term.
  • Organisms may respond to various stimuli in ways such as phototropism, hibernation, and dormancy.
  • Many environmental factors may cause the size of a population to increase or decrease.

ESSENTIALS

In order to meet this standard, it is expected that students will

a)  relate the responses of organisms to daily, seasonal, or long-term events.

b)  predict the effect of climate change on ecosystems, communities, populations, and organisms.

predict the effect of eutrophication on ecosystems, communities, populations, and organisms.

c)  compare and contrast the factors that increase or decrease population size.

classify the various types of changes that occur over time in ecosystems, communities, populations, and organisms, as long term, short term, or seasonal.

a, b, c)  differentiate between ecosystems, communities, populations, and organisms.

design an investigation from a testable question related to change over time in ecosystems, communities, populations, or organisms. The investigation may be a complete experimental design or may focus on systematic observation, description, measurement, and/or data collection and analysis.

analyze and critique the experimental design of basic investigations related to change over time in ecosystems, communities, populations, and organisms. 


KEY VOCABULARY

phototropism, hibernation, dormancy, eutrophication, catastrophic, ecosystem, community, population, organism, migration, estivation

Updated: Jun 29, 2018