Miss Ng's Sofa

sofa

Hummingbirds facts
Note the shape of beak and tongue for getting nectar, fluttering of wings at high speed (hovering)

Now see this amazing species of hummingbirds with a special tail to attract females for reproduction

Eagles - Adaptations for obtaining food (capturing prey)
Hares - Behavioural adaptation to head for higher grounds

Magnets in Disney! Magnetic force is the strongest at the poles!
What materials can Wall-E possibly be made of?

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Adaptation - Size of the pupils

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Digestion starts from the mouth and ends in the small intestine

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Binary Fission or Cell Division for replacing old or damaged cells as well as for growth

Yeast Cells Budding - Each bud forms a daughter cell on the parent cell

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HOW WHALES BREATHE (Aquatic mammal)
Whales have lungs and must go to the surface to breathe. They have nostrils called blowholes. A structural adaptation located on the top of the head to get air more easily. A flap of skin controlled by muscles opens for the whale to breathe and closes when it goes underwater.

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Effective NEXT WEEK
Lessons for 6G Science Major -
Focus Group Tutorial A - Monday 3.15 p.m. to 4.00p.m.
Chemistry Lab
Focus Group Tutorial B - Tuesday 3.15 p.m. to 4.00p.m.
6G classroom

(Optional consultation till 4.30 p.m.)

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Mid Term Test topics - Decomposers, Adaptations, Pulley Systems

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Characteristics of gaseous exchange surfaces
- Large surface area
- Surrounded by blood capillaries(tiny blood vessels)
- Thin walled (usually one-cell thick)

Relate this to adaptations - Are these structural or behavioural adaptations? How does the environment affect how animals adapt for getting air(in order to stay alive and reproduce)?

So how are the characteristics linked to adaptations? Mostly structural.
- Large surface area
Usually in response to amt of oxygen found in the environment, larger surface area means more gas can be exchanged within a period of time (more efficient gaseous exchange) SO if the amt of oxygen is lower, the larger the surface area will probably be.

- Surrounded by blood capillaries(tiny blood vessels) / thin-walled
Also in response to the amt of O2 in environment. The higher number of capillaries allow more efficient gaseous exchange. Thin walled exchange surface allow gases to pass through faster.

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