<span>As long as they receive good amounts of breast milk, they benefit from a regular protein intake of good nutritional quality that contains all the amino acids essential to health and growth<span>.</span></span>
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.
No not after twenty weeks. but around the middle of the 2nd trimester is when the baby can hear outside noises. that is why they kick.
