Which condition is necessary for a mold fossil to form? a. the fossil must be preserved in amber. b. minerals must replace the remains. c. the mold must be filled with sediment. d. hard parts of the organism must dissolve.

the answer is c i took the test and pls rate thx

Explanation:

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

      n