In a scientific investigation, the term “quantitative data” refers to numbers that are usually followed by units. graphs. written descriptions. photos of measurement.

units

Explanation:

Quantitative data are usually expressed with numbers or are in the numerical form. They are usually followed by units to indicate what is being measured. As the name implies, quantitative data refers to "quantities" so they are measurable, answering questions like how much, how many, how far, and the like.

Example of quantitative data is distance, which is measured in m, km, cm, mm, etc.  

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.