What prevents tides from moving as a single wave around the globe

Awater molecule is polar because there is an uneven distribution of these between the oxygen and hydrogen atoms.

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?

Which of the organisms listed below performs nitrogen fixation? a. legumes b. plants c. bacteria d. fungi