Which of the following is the main disadvantage of laboratory experiments? a. elimination of causal factor is increased b. the laboratory setting may not be a good representation of the real-world setting c. concomitant variation is not possible d. none of these e. exploratory research is enhanced

What was dr. willem johan kolff’s first step in using the scientific process to invent the hemodialysis machine? he built the machine and tried it with various patients, collecting data about its effectiveness. when a patient’s kidneys failed, he wondered if it would be possible to perform kidney functions with an external machine. he researched and collected data about numerous patients who exhibited symptoms of kidney failure. he drew conclusions from studies of various symptoms of kidney failure, and drew a design for the ideal external blood-processing machine.

What is used as a template during replication? a- mrna b- trna c- rrna d- dna

If people from georgia have just experienced an extremely cold winter the last couple of months, what would the climate most likely be classified as? polar temperate maritime tropical