Which type of rock is formed from cooling molten rock? a. igneous b. magma c. metamorphic d. sedimentary

In each transformation of energy , some energy what?

One of the reasons that stars are so large is because

According to theories of how life began, how did early organic molecules begin to separate from the outside world? a: specialized enzymes were required b: chains of amino acids created a barrier c: formation of microspheres or vesicles d: rna catalyzed the formation of membranes