Do now: Write in your notebook the answer to the 2 following ...
Do now: Write in your notebook the answer to the 2 following questions. 1. Distinguish (similarities and differences) between scavengers and decomposers. 2. Distinguish between predation (what predators do) and
scavenging (what scavengers do). Scavengers and decomposers Scavengers (water snails, hyenas and vultures) consume dead animals. Decomposers (fungi, some bacteria) are
organisms of decay and break down the remains of both dead plants and animals. Their waste products release substances that can be reused by other members of the ecosystem.
Predation and scavenging
Both are done by carnivores Obtain prey in different ways Predators (lion) hunt and kill prey Scavengers (hyena) feed off dead carcasses that they find
Lichen How would you describe this organism? Lichen Lichen grows on the bark of trees, on rocks and on soil. They are usually the first
organisms to grow on bare rock. They are also abundant in the Arctic where they are eaten by reindeer and other animals. Lichen Lichens are made of green algae (or blue-green
bacteria) and a fungus that live together. Neither one could survive on their own. What problem or question does this bring to mind? Aim
Why do the algae and the fungus in the lichen need each other to survive? Describe green algae and its role in food chain? Green algae are autotrophs Like other autotrophs they convert sunlight
energy into nutrients via photosynthesis (Cyanobacteria, or blue-green bacteria can also carry out photosynthesis. They are simpler than algae and have 2 photosynthetic pigments, chlorophyll and phycocyanin)
Describe fungus and the role it plays in food chain Fungi are decomposers Describe the structure of lichen under a microscope
White filamentsfungi Green cells algae Why do they live together?
Based on your observations of the structure of a lichen, what can you hypothesize about the function of the algae and the fungus in the lichen? Algae provides nutrients to the fungus. Fungus provides protection, moisture
and needed elements to the algae Why is the close association in the lichen beneficial to both the algae and fungus? Each get something from the other that they
need. This relationship is a type of symbiosis, where both organisms benefit from the relationship, called mutualism Symbiosis
Symbiosis is where organisms live in close association Mutualism-type of symbiosis that benefits both organisms (example lichenalgae and fungus) What is THIS?
Parasitism Parasitism is a symbiotic relationship where the parasite benefits, but the host is harmed Example: Tapeworm lives inside hosts (human) intestine to absorb nutrients directly without their own digestive system
Another type of symbiosis http://www.youtube.com/watch? v=Wj5iqTW8GnE Clownfish live among anemones
Commensalism Commensalism is when one organism benefits but the other is not affected Example Clownfish and anemone. Anemone provide shelter and protection to fish, but
anemone get no benefits and are not harmed Niche in an ecosystem Each organism in an ecosystem occupy a particular place, called its habitat Each organism also has a particular role or job
within the ecosystem, called a niche. In a balanced ecosystem, each species occupies its own niche Predict what would happen if 2 different organisms occupied the same niche in an ecosystem.
What would happen if 2 different organisms occupied the same niche? They would compete with each other The stronger or better one at competing or doing its job would survive and the other one
would be eliminated from its niche. It would either die out, move somewhere else or try to take on a new, closely related niche Competition Competition among living things
Habitat= place Niche = role or job Interspecific competition Between different species competing for a niche
Better adapted species survives Less successful species eliminated Intraspecies competition Competition within individual members of a population (same species) Darwins survival of the fittest
Only the strongest and fittest individuals survive Work with your partner to classify each of these relationships Heartworm in dogs
Orchids and trees Flowers and bees Homework Miller and Levine: read pages 90-93, answer page 97 questions # 2, 4, 5 and page 117,
questions #25-29 Materials and methods for Bottle ecosystem lab is now due Monday
Lecture notes Course schedule Syllabus Practice quizzes Study guide E-mail to instructor Less important Interactive modules, links, discussion, e-mail to students Research on Teaching and Learning Well prepared lectures are associated with better lecture notes Simulations and demonstration lead to...
Models 1 and 4 define the episode as acute care hospital stay only. Model 3 covers only post-acute care and Model 2 covers both acute and post-acute care ... Urgent care clinic Ambulatory surgical center Primary care clinic Medical office...
These footprints were humanlike and made by beings now referred to as Australopithecines. This is Lucy. She was discovered in Ethiopia in 1974, by Donald Johanson and his team. Lucy is a very unusually complete skeleton of an adult female...
Web-Mining Agents Topic Analysis: pLSI and LDA Tanya Braun Universität zu Lübeck Institut für Informationssysteme * / 45 Use of LDA A widely used topic model Complexity is an issue Use in IR: Interpolate a topic model with traditional LM...
Surgical wounds may closed with sutures, staples or other materials or may be left open to heal by secondary intention. Drains . The drain is chosen by surgeon and is based on the size of the wound and the type...
Title: PowerPoint Presentation Last modified by: Earle Ryba User Document presentation format: On-screen Show Company: Penn State Other titles: Times Mistral Matura MT Script Capitals Comic Sans MS Geneva Arial Blank Presentation PowerPoint Presentation PowerPoint Presentation PowerPoint Presentation Choosing unit...
Logic as a means of self-defense against wishful thinking. (We think; therefore, we err.) Logic as a means to protect thinkers from downright deceit…. Logical Fallacies: The Gentle Art of Intellectual Self-Defense "Wax On, Wax Off, Daniel-san!" --Finis! Works Cited:...
With the support of the NWLSD School Board and District Administration, each student in grades 9-12 will have daily access to an 11" MacBook Air to be used for academic purposes throughout the school day. Each student will also receive...
Ready to download the document? Go ahead and hit continue!