A sub-orbital flight means that the spacecraft could not make it into orbit. What do you think NASAs next step would be to put a human into orbit?
-PLEASE HELP

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

yes, because even though a theory has a  lot of evidence to support it, it is not always true