Scientists think that about 245 million years ago, the continents were joined in a single landmass known as gondwana.

true or false?

Will you chech and finish these for me, because i am stumped with them.

You have a pick-up truck that weighed 4,000 pounds when it was new. you are modifying it to increase its ground clearance. when you are finished

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.