Answer:
Smells travel through the air by diffusion. Air particles, and the odor particles within the air, move freely in all directions + Odors are constantly moving.
<span>Apocrine sweat glands release sweat into hair follicles. Unlike the more common eccrine sweat glands, these are found only in the armpits, anogenital region, ears and eyelids of humans. Unlike eccrine sweat, apocrine sweat doesn't really contribute to cooling the body. Apocrine sweat contains more chemical compounds than eccrine sweat; these feed bacteria on the skin which produce a detectable odor. Apocrine sweat glands become active at puberty and are most active in times of stress and sexual excitement.</span>
Answer:
Potassium
Explanation:
Potassium is the major cation of intracellular fluid and is involved in the normal functioning of neurons and muscles. Adequate intracellular levels of potassium are also required for many vital metabolic activities.
Nerve and muscle cells need to balance the intracellular potassium ion concentration as relative concentrations of potassium ions in intracellular and extracellular fluid regulate their resting membrane potential. Increased extracellular concentration of potassium depolarizes these cells while its reduced levels cause hyperpolarization making the nerve cells and muscle cells non-responsive.
Similarly, heart cells need to maintain the potassium levels as its imbalance disrupts the electric conduction in the heart and may even cause sudden death. Being a part of buffer system of cells, potassium ions maintain the pH of body fluids.
Unlike corbon dioxiod and carbon monoxide does not occur naturaly in the atmosphere.it is created through The Incomplete Combustion Of Coil ,Natural Gas,Oils.Low Levels Of Oxygen And Low Temperature Lead To The Carbon Monoxide In The Combustion mixture.