Rain occurs because of moisture gathering higher in the atmosphere. The process that creates rain in the atmosphere has a variety of steps we don't see. This process is called the water cycle. This cycle is never ending, meaning that rain is a constant on the earth as long as there's an ocean or water on the earth.
Water vapor is an atmospheric moisture that is sometimes visible to the naked eye. Water vapor comes in the form of clouds, fog, mist, and dew. The process that creates water vapor is called evaporation, which is where water on the earth is heated to a temperature that makes water molecules spread out and begin to vibrate quicker. This creates water vapor.
The water vapor is commonly carried high into the atmosphere to create clouds. Once the vapor is in the atmosphere, it begins to lower in temperature. This causes condensation, which means the water vapor is reforming into water droplets.
Precipitation Takes place after this. Precipitation occurs when the water droplets are too heavy to carry in the atmosphere, so they drop back down to the earth. After this takes place, the entire process resets, and happens again.
Hope this helps!
Answer:
six
Explanation:
Professor of Chemistry, University of Minnesota, Minneapolis. Oxygen group element, also called chalcogen, any of the six chemical elements making up Group 16 (VIa) of the periodic classification—namely, oxygen (O), sulfur (S), selenium (Se), tellurium (Te), polonium (Po), and livermorium (Lv).
A molecule is a carbohydrate if it contains carbon and water
Answer;
-B3
Explanation;
Refrigerants are divided into two groups according to toxicity:
-Class A signifies refrigerants for which toxicity has not been identified at concentrations less than or equal to 400 ppm; and
-Class B signifies refrigerants for which there is evidence of toxicity at concentrations below 400 ppm.
They are also divided into three groups according to flammability:
-Class 1 indicates refrigerants that do not show flame propagation when tested in air at 21°C and 101 kPa;
-Class 2 indicates refrigerants having a lower flammability limit of more than 0.10 kg/m3 at 21°C and 101 kPa and a heat of combustion of less than 19 kJ/kg;
-Class 3 indicates refrigerants that are highly flammable as defined by a lower flammability limit of less than or equal to 0.10 kg/m3 at 21°C and 101 kPa or a heat of combustion greater than or equal to 19 kJ/kg.
-Therefore; the answer for the above question would be Class B and class 3.
