Photosynthesis would be one, and respiratory chemistry would be another. But you could also consider the electro-chemical nature of the nerve synapses.
Probable you think to photosynthesis.
The greenhouse effect is essential to life on earth. The enhanced greenhouse effect is not. In fact if it is enhanced too quickly it can be harmful to life.
Heat packs!
Biosphere
grade 9 academic science ?? ;) anyhow... photosythesis should win the most important chemical reaction on earth "award" because if there was no photosynthesis, it would mean the end of plants generating oxygen. So therefore all living things would die because no living things can survive without oxygen!
These elements are oxygen and nitrogen.
Yes they are essential to life. If there are no chemical reaction in our body then our food are not digest and body can not get energy and if there are not chemical reaction in our environment then many usefull elements are not get etc etc
You think probable to photosynthesis.
maybe the earth essential
nitrogen, oxygen, and water are nonmetals in the atmosphere, and their cobinations are essential for life on earth
solid, liquid and gas are the three states of a substance essential for life on earth.
Yes. That is true. Water is very good solvent for most of the minerals. Minerals are very essential for the life to sustain. Ions are formed out of minerals in water. Such ionization is essential for most of the chemical reaction to occur. The free flowing ions can readily interact to from new chemicals.
Sunlight and water.
The greenhouse effect is essential to life on earth. The enhanced greenhouse effect is not. In fact if it is enhanced too quickly it can be harmful to life.
Chemical reaction help us in our daily life by / through make all task easier... -sEnA
i am not completely sure but i think it (chemical reaction) describes when two or more atoms bond together
YES
a chemical reaction that happens once cannot be reversible while d one with lifewill continue to reproduce