Answer: Precambrian, period of time extending from about 4.6 billion years ago (the point at which Earth began to form) to the beginning of the Cambrian Period, 541 million years ago.
Explanation:
i don't if this is want your looking for but hope it helps
A large number of species in an ecosystem can be collectively termed as biodiversity.
Gas, Electric, Solar
Ideally, solar would be the best for the environment, but in my area it is not an option. Electric would be better than gas though
Lecithin is (organic chemistry) the principal phospholipid in animals; it is particularly abundant in egg yolks, and is extracted commercially from soy. It is also a major constituent of cell membranes, and is commonly used as a food additive (as an emulsifier). While cephalin is (biochemistry) a phospholipid found particularly in the cells of nervous tissue; it is also the primary phospholipid in bacteria.
T<span>ogether our bones, muscles and joints form our musculoskeletal system and enable us to do everyday physical activities.</span>