Ateam of biology students performed an experiment to test the effects of four different solutions on a de-shelled, raw chicken egg. each raw, unbroken chicken egg of the same size was placed in each of four different solutions. twenty-four hours later the following results we obtained. what is the independent variable in this experiment? solution a, b & c. solution d only the eggs mass

The answer is solutions A, B, and C. Independent variable is the variable that is changed or controlled in order  to study its effect on the dependent variable. The dependent variable is ‘dependent’ on the independent variable. In this case, the final size of the egg depends on the type of solution (its concentration) that it is placed in.

d. making up measurements to record.

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."