Which evidence of evolution allows scientists to know what the physical features of an organism were ?

Which of the following is a main difference in cell structure between an onion cell and a human cheek cell? a. an onion cell contains one nucleus, whereas a human cheek cell contains two nuclei. b. an onion cell has a cell wall. c. a human cheek cell contains chloroplasts. d. there is no difference between an onion cell and a human cheek cell. you for your.

What happens whenever a net force acts on an object

Is there any solid scientific evidence that humans have been cloned?