lithium and fluorine
Lithium donates an electron to fluorine and make the fluorine with a negative charge and a full outer shell. Lithium consequently get a positive charge and a full outer shell. They then are attracted to each other an form a giant ionic lattice.
Carbon and hydrogen are organic so they don't
Nitrogen and Oxygen are also organic.
Chlorine can form ions but not with silicon
He La cells have play important role in the study of cancer and even in cancer therapies. He La cells are also used to diagnose trisomic disorders such as Down's Syndrome with the help of chromosome banding. Some genes present in the He La cells are used as markers and compared with the other cell line in question. Presence of the marker for Down's syndrome in the cell in question shows that the person is suffering from the disease.
Answer:
B
Explanation:
Cumulative means that someone came up with an idea first and someone later built an idea off of that. Kepler basing his laws off of Newton's laws is the only option that uses cumulative knowledge. Everything else is either completely independent or working together neither of which is cumulative.
A.Cladograms, because those are diagrams, all the rest contribute to natural selection.
