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HOMEWORK: Choose three English words and use them in sentences. NEXT LESSON: Talent Versus Money |
상 태 |
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Diane2012 |
등록일 |
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2024-08-22 |
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Challenge: Practicing this piano song will be a challenge to me.
Technique: This swimming technique was most hard to learn.
Activity: Some activities are dangerous to children.
For next lesson:
I will choose talent!
WAS IT DESIGNED?
The Byssus of the Marine Mussel
LIKE barnacles, marine mussels attach themselves to rocks, wood, or ship hulls. However, unlike barnacles, which fasten themselves tightly to a surface, marine mussels dangle by a network of thin filaments called byssus threads. While this method increases the mussel’s flexibility for feeding and migration, the threads seem too flimsy to withstand the impact of ocean waves. How does the byssus allow the mussel to hang on and not be swept out to sea?
Consider: Byssus threads are stiff on one end, yet soft and stretchy on the other. Researchers have found that the precise ratio used by the mussel—80 percent stiff material to 20 percent soft—is critical for providing the strongest attachment. Hence, the byssus can handle the force of dramatic pulling and pushing by marine waters.
What do you think? Did the byssus of the marine mussel come about by evolution? Or was it designed?
Thank you for reading! Take care! |
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Challenge: Practicing this piano song will be a challenge to me.
Technique: This swimming technique was most hard = the hardest one to learn.
Activity: Some activities are dangerous to = for children.
For next lesson:
I will choose talent!
WAS IT DESIGNED?
The Byssus of the Marine Mussel
LIKE barnacles, marine mussels attach themselves to rocks, wood, or ship hulls. However, unlike barnacles, which fasten themselves tightly to a surface, marine mussels dangle by a network of thin filaments called byssus threads. While this method increases the mussel’s flexibility for feeding and migration, the threads seem too flimsy to withstand the impact of ocean waves. How does the byssus allow the mussel to hang on and not be swept out to sea?
Consider: Byssus threads are stiff on one end, yet soft and stretchy on the other. Researchers have found that the precise ratio used by the mussel—80 percent stiff material to 20 percent soft—is critical for providing the strongest attachment. Hence, the byssus can handle the force of dramatic pulling and pushing by marine waters.
What do you think? Did the byssus of the marine mussel come about by evolution? Or was it designed?
Thank you for reading! Take care!
NOTE: Thank you for the wonderful article, Diane. ^^ |
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