If I was to guess, It would be D.............
The correct word to fill the gap would be indirect.
In other words, an indirect survey makes use of evidence, such as the footprints left behind by animals, to follow animals that are difficult to track.
Ecological surveys are of 2 types:
Direct ecological surveys have to do with studying phenomena directly and recording whatever that is observed.
Indirect surveys involve an indirect way of studying phenomena. The signs left by phenomena are observed and logically used to make deductions about such phenomena.
More on ecological surveys can be found here: brainly.com/question/1182023?referrer=searchResults
The polymer that is responsible for your inheritance is DNA. DNA stands
for deoxyribonucleic acid, and is responsible for all the characteristics
that living things inhabit.
They both increase in proportion to one another. Hope this Helps:)
