explain why PCR can not be used for diagnosing if someone has recovered from COVlD 19 (or any other illness).

Nasa scientists must work together to make sure that everything is correct and accounted for when launching a shuttle. besides a physicist, what other type of scientist would be in making sure that the shuttle has the appropriate type and amount of fuel to reach its destination?

Northern switzerland has a fairly cold climate caused by sea winds from the atlantic ocean but souther switzerland tends to be much warmer and sunnier, what could cause this difference?

Explain why autonomous underwater explorers (aue) will provide entirely new kinds of information about ocean processes