Question

what evidence shows vertebrates have a common ancestor but change as they grow?
all embryos keep their long tails for movement as adults.
all embryos have gill pouches, but they disappear in land animals.
all embryos maintain arm and leg buds except for fishes.
all embryos have the same body shape in the late stage.

Explanation:

The presence of gill - pouches in all vertebrate embryos indicates a common ancestor. In land animals, these gill - pouches disappear during development, showing changes as they grow. Adult vertebrates don't all have long tails for movement, not all embryos maintain arm and leg buds (fishes have fin buds), and embryos do not have the same body shape in the late stage.

Answer:

All embryos have gill pouches, but they disappear in land animals.