Impact of abiotic and biotic factors

What is an ecosystem? 

• a population of different species. 
• a community of living and non living organisms. 
• a population of the same species. 
• The community of Belton Middle school/ Freshman center.  

A group of land ecosystems with similar climates and organisms is called a(n)

• Food Web
• Biome
• Pangea
• Estuary

A large variety of plants grows in tropical rain forests because?

• Warm, humid, rainy
• many insects live there
• Very good soil
• Forest floor is dark and thick

Temperature, light, air, water, and soil are all  _____  parts of the environment

• alive
• biotic 
• abiotic
• living

Tags

NGSS.MS-LS2-3

Which of the fallowing has only abiotic factors?

• Sunlight, algae, and temperature
• Guppy, crab, oxygen
• Sunlight, soil, and weather
• Algae, temperature, and dog

Which example shows how abiotic and biotic factors affect each other in an ecosystem?

• As it gets cold bears go into hibernation
• Spiders spin lots of webs to catch prey
• Plants take in carbon dioxide from the environment
• Decomposers break down dead animals

What is likely to happen to the population of lions if the population of trees decrease

• they will increase
• they will decrease
• they will stay constant

What is likely to happen to the population of birds if the population of grasshoppers decrease?

• they will increase
• they will stay constant
• they will decrease

Which of the following is an EXAMPLE of a limiting factor?

• Water
• the color of the sky
• Migration
• Thick fur

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Ecosystem is the level of organization that is best described as including –

• only a single individual of a single species plant or animal.
• two species that live in the same habitat and depend on each other.
• all of the abiotic factors which characterize a geographic area.
• various species in an area and the abiotic factors on which they depend.