Somebody asked me what environmental science is and I looked at them funny because I thought, "Of course, they should know that Environmental
Science is
Studying how humans impact the environment (when we mine for coal)
The study of how living things interact with each other and nonliving things
The study of how the earth came to form

The heat added represents an energy change.

The answer is  a: x-rays—2 and ultraviolet rays—3.  hope i !

In order to improve results, many different steps can be taken into account. 1) using more precise scales and thermometers is always something that should be considered as being precise means that you are more exact with your answer.2) increasing the sample size should also be considered, if you have a bigger sample size you are able to determine if your results are accurate as well as if there are any variables that should be taken into account plus it assists in the statistical analysis and produces overall better data3) using better handwriting is also a plus, along with organizing the data properly so that others are also able to read the results and even redo the experiment in the future if it is needed.