What parts of the integumentary system are made up of dead epidermal cells?

How does pregnancy begin? a) a placenta forms in the uterus b) a sperm reaches an egg in the fallopian tubec) the blastocyst differentiates into two cell types d) contractions begin in the uterine wallapex

20 how are energy cycles and growth cycles related?

Which property is best to use when determining the strength of an ionic bond in a solid lattice energy conductivity hardness solubility