Although Our Current Understanding of Why Coral Bleaching Occurs Is

question 25

Multiple Choice

Although our current understanding of why coral bleaching occurs is incomplete,which of the following is consistent with the most commonly held hypothesis of this phenomenon as discussed in your text?

• A)As the number of planktonic,photosynthetic organisms available decreases due to increased predation,fewer symbionts are available for the corals to associate with.
• B)As the number of pollutants dumped into the world's oceans increases,more and more corals will use symbionts that are not photosynthetic.
• C)As global temperatures continue to rise,corals will expel more of their colorful,photosynthetic symbionts.
• D)As pollutants and global temperatures continue to rise,corals will have more difficulty manufacturing the photosynthetic pigments they need to produce their own food.

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Definitions:

Law of Continuity

A principle in Gestalt psychology stating that elements that are arranged on a line or curve are perceived to be more related than elements not on the line or curve.

Fovea

A tiny pit located in the macula of the retina, responsible for sharp central vision necessary for activities like reading.

Lens

A curved piece of glass or other transparent materials used in devices like glasses, cameras, and microscopes to focus light rays.

Extrasensory Perception

The claimed ability to obtain information without the use of known sensory processes or physical interaction.