Which type of placentation is found in dogs and cats

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

Answers to mastering biology drag the labels to their appropriate locations to complete the punnett squares for morgan's reciprocal cross. drag blue labels onto the blue targets to indicate the genotypes of the parents and offspring. drag pink labels onto the pink targets to indicate the genetic makeup of the gametes (sperm and egg). labels can be used once, more than once, or not at all. hints

In which energy level are valence electrons located?