Why is the separate types hypothesis considered so unlikely by most biologists?
a.The similarity in appearance in many living things suggests that there must have been only one common ancestor.
b. There are multiple similarities in all life at the cellular level that strongly suggest a common origin for all living things.
c. The separate types model hypothesizes many changes in living things over time, while the fossil record suggests that few of these changes have occurred.
d. If different types of life evolved independently, it would be obvious in the fossil record.
