• What are the three structures that all cells have in common?

All cells share four common components: (1) a plasma membrane, an outer covering that separates the cell’s interior from its surrounding environment; (2) cytoplasm, consisting of a jelly-like region within the cell in which other cellular components are found; (3) DNA, the genetic material of the cell; and (4) ribosomes, particles that synthesize proteins. However, prokaryotes differ from eukaryotic cells in several ways.

1. efficient use of space

2. elimination of groundwater contamination

3. energy generation

4. lower carbon footprint

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex