Prokaryotes are organisms whose cells lack a nucleus and other organelles. Prokaryotes are divided into two distinct groups: the bacteria and the archaea, which scientists believe have unique evolutionary lineages. Most prokaryotes are small, single-celled organisms that have a relatively simple structure.
This is because light energy is needed for plants to carry out photosynthesis. When plants photosynthesize, they absorb carbon dioxide gas and give out oxygen gas.
The chemical formula describes the model of water by showing the ratio of hydrogen to oxygen. The formula indicates 2 hydrogen molecules and 1 oxygen molecule
