Carbonized fossils are made of: A: the carbon remains of the original organism
B: carbon which replaced the plant or animal
C: a cast of coal
D: a mold left in coal

According to the big bang theory, after the "bang," the universe remained dark until about  300,000 yearsone billion yearsthree minutesthree billion years  later, when neutral atoms began to form.

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

The most famous fossil called archaeopteryx is which of the following? a dinosaur a fern a fish a bird