Without any conscious effort, your prepares you to fight or flee from dangerous situations. set point arcuate nucleus autonomic nervous system left frontal lobe

The correct answer is C. Autonomic nervous system

Explanation:

The Autonomic nervous system refers to a system of nerves and specialized cells that is part of the peripherical system and controls unvoluntary or automatic reactions and movements. Due to this, the autonomic nervous system is responsible for the fight-or-flight response that occurs when there is a threat or harmful event and it is necessary to scape (flight) or face it (fight).

This causes an automatic or non-voluntary release of hormones especially adrenaline and other changes in the body such as muscle tension and increased heart rate. Thus it is your autonomic nervous system the one that prepares you to fight or flee from dangerous situations without any conscious effort.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex

answer: ice crystals in air

the water from the water body or another source of water gets evaporated as water vapor as an effect of heat on water. these water vapor rises in the upper layers of the earth atmosphere under high atmospheric pressure. the atmospheric pressure of these water molecules starts to decrease due to the effect of cold air. the invisible water vapor condenses into visible water droplets and ice crystals.these ice crystals and water droplets being less denser than the surrounding air floats on air as clouds.