What is a remuda?* the herd of horses cowboys kept
the small flock of sheep used to provided wool to cowboys
a trail from Texas to Oklahoma
the start point of the transcontinental railroad

A remuda is a herd of horses that ranch hands select their mounts from. The word is of Spanish derivation, for 'remount' i.e. "change of horses" and is commonly used in the American West. The person in charge of the remuda is generally known as a wrangler.

Explanation:

A herd of horses that have been saddle-broken, from which ranch hands choose their mounts for the day.

Explanation:

It was in the vocab (i did not look in the vocab dictionary just now, i still remembered)

incident infrared radiation is blocked. visible and ultraviolet radiation heat   earth.

earth radiates infrared radiation. infrared radiation is blocked and heats earth. visible and shortwave radiation heat earth.

earth radiates longwave radiation

longwave radiation is reflected downward longwave radiation heats earth