Answer:
gives the background and purpose of an experiment.
Explanation:
Science can be defined as a branch of intellectual and practical study which systematically observe a body of fact in relation to the structure and behavior of non-living and living organisms (animals, plants and humans) in the natural world through experiments.
The introduction in a science text gives the background and purpose of an experiment.
I believe the answer should be "Instead" because it is a conjuctive adverb
I know who did <span>Washington Irving did. I read about him in social studies.</span>
The correct answer should be journalists and articles from esteemed sources such as the NY Times in the US, or The Guardian in Britain. You would be advised to not look into yellow pages or other controversial sources.
