1st Period - Seating Chart
-
Upload
kaseem-richard -
Category
Documents
-
view
39 -
download
1
description
Transcript of 1st Period - Seating Chart
1st Period - Seating Chart
Table 1:EngelLutherAlexisTia
Table 2:TiyanaMarquisAhmarioShanice
Table 3:MatthewLanerraDamonyaeLorenzo
Table 4:LatonyaTneyahTyshawnIkeem
Table 5:MiyaArmeshaMichaelGregory
Table 6:BobbiDeonteJasminJohn
Table 7:EricLarryKaliaahDestiny
Today’s Agenda 10/15/13: Brief lecture – interactions among
organisms, energy flow in ecosystems Web of Life Activity Exit Slip
Biotic: all living things in an ecosystemEx: plants, animals,
microorganismsAbiotic: non-living things in
an ecosystemEx: temperature, sunlight,
humidity, water, soil, mineral nutrients (nitrogen, phosphorus, sulfur)
Niche versus HabitatNiche: the role an organism
plays in its community; everything an organism does and when and where it does it.
Habitat: where an organism lives; provides an organism with all resources they need to survive.
Predation, Parasitism, and HerbivoryPlease ask if you need clarification for the
above terms.
These are three types of interactions in which one species benefits, while the other is harmed.
Examples?
Mutualism & Commensalism Mutualism Example:
A hummingbird eatsnectar from a flower
Commensalism Example: A bird builds a nest in a tree.
In both examples, who isbenefitting? How would you define mutualism and commensalism?
Producers and ConsumersPrimary producers capture energy from
the sun or chemicals and store it in the bonds of sugars Also called autotrophs Ex: plants and bacteria use photosynthesis and
chemosynthesis to obtain energy and nutrientsConsumers rely on eating other
organisms to obtain energy and nutrients Also called heterotrophs Ex: herbivores, omnivores, carnivores,
decomposers, scavengers
The Web of LifeFor this activity, as you read the
Introduction, answer the last questions on your guided notes.
Complete the food web in class, and answer the analysis questions at home if you cannot finish in class.
We will review your answers tomorrow.
Energy and BiomassAs organisms feed on each other, matter
and energy move through the community’s trophic levels.
Not all energy is transferred 100% efficiently at each trophic level Ex: burning gas while driving – only 14%
actually moves the car down the road; the rest is spent as heat
Same with organisms – energy is burned as heat; only 10% is transferred as usable energy (the rest is “lost” as heat)
This energy pyramid illustrates the 10% rule: only about 10% of the energy contained in any given trophic level is transferred to the next highest level. The rest is used to power life processes or “lost” as heat.
Energy and Biomass Biomass is the total amount of living tissue in each
trophic level of an ecosystem
Organisms at lower trophic levels exist in
fargreater numbers, with greater biomass, than organisms at higher trophic levels.
Today’s Agenda – 10/16/13Review ACT Practice Questions – 15 min
Review homework – 10/15 minContinue on with Energy Flow through Ecosystems – guided notes
ACT ReviewWe will spend 10 – 15 min every
Wednesday to practice for ACT You will be working in pairs – with
the person sitting next to or across from you at your table
Use whiteboards to answer and explain your question
If you get stuck, ask me – I will help you out