Answer:
well, you never know
Explanation:
you know every human being has their way of living and some are weird, that might be one of ours, which we don't see ourselves but someone else. so, what I'm saying is that, who cares!!
Answer:
Environment
Explanation:
In a research study, internal validity refers to how well an experiment was carried out and to what extent the piece of evidence supports a claim.
The lesser the chance of confounding in a study the higher the internal validity.
Study of memory is possible through learning the electrical activity created by neurons.
Therefore, thunderstorm will affect the readings hence it is an Environmental threat to the internal validity.
Social is interaction with peers, academic is more intense focus, and physical is improved body
