r Density is mass per unit of volume. Which pair of lab instruments would a student use to measure the density of seawater? a caliper and a flask a stopwatch and a beaker a balance and a graduated cylinder a meter stick and a temperature probe

The correct answer is C. A balance and a graduated cylinder

Explanation:

Considering density is calculated by dividing the total mass by the volume (d= M/V) to know the density of a substance, you will need to know first the mass and the volume of it. In the case of mass, this refers to the amount of matter and can be measured with instruments such as balances and using units such as grams or kilograms. On the other hand, the volume is the space occupied by the substance which is measure in litters or millimeters through instruments such as beakers, graduated cylinders, and similar. Thus, the two pair of instruments that are adequate from the options is a balance that measures the mass and a graduated cylinder that measures the volume.

it's c. (to reduce the greenhouse effect/carbon gasses)

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.