Olivia became interested in the fossil evidence that wegener used to form his hypothesis of continental drift. how did fossils show that the continents were once joined together?

a. animal fossils such as the mesosaurus were found on one continent.
b. scientists found examples of different kinds of fossils on some continents.
c. plant fossils of the same kind of fernlike plants were found on five continents.
d. freshwater animal fossils were found in the nearby oceans.

C.Plant fossils of the same kind of fernlike plants were found on five continents

the answer is barium and copper bromide

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.