Estelle wants to find out which plants are most abundant in her yard. Which kind of scientific investigation should she use

The answer is "a field study"

Explanation:

A scientific investigation is a finding process through which scientist makes observations on the world and things in it and looking for possible answers through research and the other scientific process.

A field study is a type of scientific Investigation where findings are carried out on the subject to be investigated while in their natural environment outside the laboratory. The most important thing is the subject to be investigated is not changed from its natural settings and data are collected directly.

the denominator has a very specific role.

weathering is the answer.