If You Make a List of the 100 Nearest Stars

question 106

Multiple Choice

If you make a list of the 100 nearest stars in the sky,you will find that most of them are:

• A) white dwarfs.
• B) main-sequence stars.
• C) giants and supergiants.
• D) brown dwarfs.

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Definitions:

Nitrogen Fixation

The process by which certain bacteria convert atmospheric nitrogen into ammonia, making it available for plants and other organisms.

Earth's Tilt

The angle between Earth's rotational axis and its orbital axis, which significantly influences seasonal changes and climate.

Denitrification

A microbial process by which nitrogen in the soil is converted back into gaseous nitrogen, removing it from the ecosystem.

ENSO Event

A periodic variation in winds and sea surface temperatures over the tropical eastern Pacific Ocean, affecting climate globally (El Niño-Southern Oscillation).