Some fish have bony fins. if the body of water they are in dries out, these fins can be used to the fish "walk" to another body of water. in this context, bony fins are an example of

Which organelles are involved in energy conversion

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

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