Gravitational attraction between two celestial objects (i think)
they conduct a literature review before formulating any hypothesis. carrying out a literature review involves utilizing research databases to look for research materials that cover or are related to a certain topic of interest. the scope of the study and subject matter will influence the selection of research materials. information in these material play a crucial role when scientist are formulating hypothesis.
Replication/ reproduction. one side copies then replicates and matches up. hope this helps
Answer:
Gamete and bacterial cell.
