Recent research has utilized cell phones to contact individuals. If you text participants every six hours to study how much they are thinking about their partner, it is an example of

Experience-sampling.

Explanation:

The term above has been described to be a developed tool in research seen to bring a research directly to the said people his is making such research on physically and also getting a written view or their insight towards the said topic or subject. It can be seen in form of questionnaires, interviews and other different forms. It makes a researcher have a true feel of the group or people his research is based on an can help him built a perfect ideography of which he interviewed then of in any scenario.

the part of the earth that is best reflected on a map is the surface. maps reflect borders of countries or territories as well as physical features like mountains.

explanation:

acid rain is the answer