The two groups differ in the composition of the cell wall and the lipids in the cell membrane. 3. ... Organelles contribute to efficiency in eukaryotic cells because they concentrate the biochemicals needed for chemical reactions so that the reactions proceed more rapidly.
3)false
4)blood pressure
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From lowest to highest hierarchy it would be: planet, star, solar system, galaxy.
answer gradualism Explanation: gradualism refers to the type of evolution that takes a long time