FEBRUARY 18, 2015 WARM UP: You need your ISN and textbook.
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Transcript of FEBRUARY 18, 2015 WARM UP: You need your ISN and textbook.
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FEBRUARY 18, 2015WARM UP: You need your ISN and textbook
![Page 2: FEBRUARY 18, 2015 WARM UP: You need your ISN and textbook.](https://reader038.fdocuments.us/reader038/viewer/2022102906/56649d135503460f949e7566/html5/thumbnails/2.jpg)
*Abiotic and Biotic Factors
Title and take notes on p.112 in your ISN.Important: You will need to write all
information
marked with an asterisk *
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Essential Question:
How do organisms depend on and compete for biotic and abiotic factors in an ecosystem?
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*Abiotic factors are nonliving parts of the environment
* Examples: air, water, soil, rocks, light, and
temperature
*Organisms depend on many external factors and conditions in order to survive:
*Biotic factors are living parts of the environment
– * Examples: grasses, trees,
animals
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BIOTIC• Cows• Grass• Trees• Shrubs
ABIOTIC• Air• Soil, rocks• Light • Temperature
Look at the picture below.
What are the biotic and abiotic factors observed?
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* Limiting Factors
* Environmental factors that restrict the size of a population.
* Organisms COMPETE for these factors.
* Examples: food
water
shelter
available sunlight
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Competition in a Food Web
Who’s competing for what in this terrestrial food web?
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In this food web, the snake and hawk compete for the mouse. The grasses are competing for sunlight and carbon dioxide.
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* Carrying Capacity:
* the largest number of individuals of one species that an environment can support
* Disease, space, predators and food are factors that limit carrying capacity
* Carrying capacity increases and decreases as the amount of resources changes
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Textbook Assignment
Read and work Section 12.1 pp. 486 – 493.
Read and work Section 12.2 pp. 498 – 507.
Read and work Section 13.2 pp. 546 – 553.
Complete the above assignment silently and independently. We will be covering these topics on Thursday and Friday.