One hypothesis about the origin of the building blocks for life is that they werea. made inside meteors.
b. formed when lightning struck water.
c. started by the rna in the ocean.
d. brought to earth by meteorites.

According to piaget, children have acquired the cognitive skill of conservation when they're able to a. understand that six ounces of liquid in a jar and six ounces in an elongated tube are equal. b. understand the viewpoint of other people. c. relate objects around them to their own needs. d. realize that the term heavy describes an object one way and the term big describes it another way. it is not b nor c. did this 2 x wrong..