Answer:
In cross-sectional research, data is collected on a sample of people on a single occasion.
Explanation:
Cross-sectional research is a type of study in which data is observed, analyzed and collected in a single point in time from <em>various subjects. </em>
Contrary to this, a longitudinal study would observe the same subjects during an extended period of time.
In this case, data is collected from the subjects on a single occasion, proceeding to examine any potential relations between the variables based on the hypotheses.
Answer:El espectro de luz visible es el segmento del espectro electromagnético que el ojo humano puede ver. Más simplemente, este rango de longitudes de onda se llama luz visible. Normalmente, el ojo humano puede detectar longitudes de onda de 380 a 700 nanómetros.
Explanation:
He applied his skill in engineering to toughen up the defence