How to make a girl fall in love with her?

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?

What is the difference between how ionic and covalent bonds form

Which of the following is the earliest era of earth's geologic time scale? cenozoic mesozoic precambrian paleozoic