Question

Which of the following is used as evidence in supporting the idea that life changes over time?

A. the time period in which an embryo develops

B. the similarities in the body systems such as the nervous and circulatory systems

C. the existence of homologous structure

D. the big bang theory

Answer 1

i think its b im not sure though

Answer 2

Would say A, the time period in which an embryo develops as it is the only one which describes a life form actually changing