Limestone and quartz are common minerals found in Florida. Sarah has a piece of each, but does not know which is which. To find out, she plans an investigation to determine the density of each sample, because limestone has a lower density than quartz. Density is equal to the mass divided by volume. She places a piece of each mineral into a graduated cylinder that contains water. The table shows the measurements Sarah recorded. What can Sarah most likely conclude is true? Mass of Mineral 1 9.50g Mass of Mineral 2 9g Volume of water in graduated cylinder 25ml Volume of water and mineral 1 in graduated cylinder 30ml Volume of water and mineral 2 in graduated cylinder 28.4 ml *
a.) Mineral 2 is limestone because it has less mass
b.) MIneral 1 is limestone because it has more mass
c.) MIneral 1 is limestone because it has a lower density
d.) Mineral 2 is limestone because it has a lower density

Generate a research topic/hypothesis, for example some type of old's wives tale or cliche. identify the population of interest. how will you will randomly select in order to get a representative sample? how you will randomly assign the sample into the experimental and control group? what variable(s) will each group receive? identify the independent and dependent variables. explain how you will control for outside/confounding variables. the following is an example: example: topic: does more time spent studying lead to better grades on exams in college students. population of interest: all students enrolled at college random selection: access database with the names of all students and every 5th student will be involved in study. random assignment: every other student gets sent to the experimental group. experimental group: studies for two hours per night 5 days a week. control group: studies for less than 2 hours per night 5 days a week. independent variable: time spent studying dependent variable: exam scores control for: all students study on same nights, have same instructor, take same posttest, study same material, take exam at same time, etc. everything should be the same between the two groups except the amount of time spent !

Want brainliest + free points? answer this question correctly and i got you. in rural areas, be aware of sudden hazards, particularly near a. wide turns or working farms b. tight turns or working farms c. long stretches of open road d. abandoned farms

How do earth’s systems interact with each other?