Ryan left the science museum and drove south. gab left 3 hours later driving 42km/h faster in effort to catch up to him. after 2 hours gab finally caught up. find ryan's average speed.

Is the alien theory a scientific claim? why or why not? just took the test it was , : " the alien theory is not a scientific claim because it is not based on valid data, there is no evidence to support it, and it does not come from a reliable source."

This is one type of line graph in which the independent variable is time plotted on the x axis and the dependent variable, also numerical, is plotted on the y axis.

Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.