PLEASE HELP!!
Susan records the heights of the plants she is using in her experiment. Is this qualitative or quantitative data?

A. Qualitative data

B. Quantitative data

Which of the following best explains why the end of a spoon sticking out of a cup of hot water also gets hot? question 7 options: the heat from the hot water is conducted through the spoon handle the hot water heats the air surrounding the upper part of the spoon. the hot water causes a physical change in the spoon handle. the hot water causes a chemical reaction to take place in the spoon.

Which of the following is always a reactant in a combustion reaction? oxygen nitrogen hydrogen carbon

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit