Early humans used rocks as tools to make other things as well as to construct buildings. why was it better for them to use rocks than another material such as wood?

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

The seven sisters, seven stars located more than 400 light-years away in the taurus constellation can be seen here with venus and another constellation, orion. the seven stars stay grouped together but seem to move, like the planet venus. why do stars seem to move like planets in the night sky?

Increasing the pressure on one spot of a fluid will increase the pressure everywhere else in the fluid a. pascals principal b. archimedes' principal c. bernoulli's principal