Q: Early in the development of a human fetus, the skeleton is made entirely of what? Choices: - bones - anterior - membrane - cartilage A:
cartilage

Q: Urea and carbon dioxide are molecules with how many carbon atoms? Choices: - even number - four - two - one A:
one

Q: What is made up of the pinna, ear canal, and eardrum? Choices: - the epidermis - the inner ear - the nervous system - the outer ear A:
the outer ear