Which type of organism contain a membrane-bound nucleus The options are:
Both cells and viruses
Neither cells or viruses
Only cells
Only viruses

This is one form of rna that transports a specific amino acid to a ribosome during protein synthesis.

Ricardo notices that when he plays soccer in the rain, his ball does not seem to go as far after a kick. what is the best scientific question that ricardo could ask about this observation? is soccer better played in the rain or sun? how does rain affect the distance a soccer ball can travel? how does rain affect the speed of a soccer ball? is soccer affected by the rain?

There are fewer than 100 naturally occurring elements in the universe, but there are millions of different unified substances. explain how this can be true.