Aph of 12 indicates a(n) weak acid strong acid weak base strong base

The correct answer is- strong base

Explanation:

A base is said to be a strong base if it completely dissociates when put in an aqueous solution and release OH⁻ ions in the solution. The acidity or basicity of a solution can be checked by checking the pH of that solution.

pH is a scale which have numbers 1-14 that tells about how much acidic or basic a solution is. Solution with pH seven are said neutral and solution with below pH 7 are acidic and solution with above pH 7 are basic.  

A strong base has a pH range between 12 to 14 therefore strong base has very high pH and strong acid have pH 1-3 so strong acid has very low pH. So the correct answer is- strong base.

chromosomes carry the genetic information for organisms. also, chromatin is the thread like dna which is located in the nucleus of an organism.

4.) metal

"-the movement of carbon from the nonliving environment into living things and back to the environment

-carbon is the essential component of proteins, fats, and carbohydrates (which make up all organisms)

-carbon exists in air, water, and living organisms

-producers convert carbon dioxide in the atmosphere into carbohydrates during photosynthesis

-bacteria in the atmosphere cycles through the system in filtration units

-in cellular respiration, carbon is released back into the atmosphere as carbon dioxide

-some carbon is stored in limestone (forming one of the largest "carbon sinks" on earth)

-largest carbon reservoir on earth= limestone

-carbon stored in the bodies of organisms as fat, oils, or other molecules may be released into the soil or air when the organism dies

-this may form deposits of coal, oil, or natural gas (fossil fuels, which increased the atmospheric carbon dioxide)

-fossil fuels store carbon left over from bodies of organisms that died millions of years ago

-they are located in the surface of earth, deep within the earth and beneath the ocean floor."