X-ray diffraction data collected by rosalind franklin and maurice wilkins watson and crick solve the structure of dna. which apsect of the structure of dna did the data them solve

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.

All organisms contribute some water to the water cycle by conducting

Ascientific idea becomes valid when it is what?