Answer:
A monograph is a specialist work of writing or exhibition on a single subject or an aspect of a subject, often by a single author or artist.
Explanation:
Facts : -
- A Monograph has some common characteristics with books and review ( survey ) papers.
- A monograph is a special type of book written on a single specialized topic, devoted mainly for research works.
- It could pose some unsolved problems and may provide detained explanation of some research papers.
I think it is d or it would be all of them apart from c
<span>Competition, sometimes called environmental competition.</span>
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B. One
because an independent variable is something you change. So in a scientific experiment you only change one thing. If you happen to change more than one thing then the test becomes unfair therefore you should repeat and make sure that only one thing is changed this time.