The effect of de-forestation on the ozone layer problem is

A) that it worsens the problem only if the wood is burned.
B) that it actually helps reduce the problem.
C) that it worsens the problem regardless of whether the wood is burned.
D) essentially zero.


D

Physics & Space Science

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If a K0 meson at rest decays in 0.89 × 10^?10 s, how far will a K0 meson moving at 0.96 c travel through a bubble chamber?

a. 17 cm b. 1.1 cm c. 53 cm d. 42 mm e. 9.2 cm

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The longitudinal strength of wood is due to the high strength of crystalline _________cells.

Fill in the blank(s) with the appropriate word(s).

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The luminosity of light emerging from the star's gaseous surface is equal to the

A) rate of energy generated from nuclear reactions in the star's core. B) mass of the star. C) star's apparent brightness. D) star's lifetime. E) temperature of the star's core.

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