When phospholipids and other molecules are placed into water, microspheres (primitive cells) form spontaneously. These microspheres are called.
Scientists believe that our atmosphere has progressively changed as some living organisms began to harness sunlight energy to split water molecules to form complex carbon molecules. This activity led to an increase in:
An organism has just been located and needs to be placed into one of the domains of life. The characteristics that have been reported are multicellular and autotrophic. Based on your knowledge, in which domain should this organism be placed?
. A system of statements and ideas that explain a group of facts or phenomena is called a:
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