The main acid in the stomach is hydrochloric acid (HCI). Which chemical equations show a reaction that occurs when someone takes an antacid? Check all that apply.
HCI + NaOH - NaCl + H20
2HCI + CaCO3 -> CaCl2 + CO2 + H2O
2HCI + Mg(OH)2 -> MgCl2 + 2H20
6HCI + 2A1 2AlCl3 + 3H2
HCI + NaCO3-NaCl + H2O + CO2

the areas around the equator

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.