16-Jan-2025 Theme: 'Filter'

(1) True or false? All filter feeding relies on water.

Answer: True.

(2) Which animal groups include some filter feeders? (a) Birds (b) Mammals (c) Insects (d) none of the above (e) all of the above.

Answer: (e) all of the above.

(3) What problem does the theory of The Great Filter attempt to answer?

Answer: The Fermi Paradox (apparent absence of extra terrestrial life).

(4) What is a philtre?

Answer: A magic potion (usually an aphrodisiac).

(5) What 1953 invention by Claude Teague helped spread the illusion that cigarette filters reduce the harm of smoking?

Answer: Colour changing filters (turned yellow when exposed to smoke).

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