Answer:
B
Explanation:
They come from other Rocks or living things such as bones,leaves,stems, etc.
1st -When cells are small, the movement of food and waste can be efficiently handled by the cell membrane
Virus: an infective agent that typically consists of a nucleic acid molecule in a protein coat, is too small to be seen by light microscopy, and is able to multiply only within the living cells of a host.
Bacteria: a member of a large group of unicellular microorganisms which have cell walls but lack organelles and an organized nucleus, including some which can cause disease.
Fungi/fungus: any of a group of spore-producing organisms feeding on organic matter, including molds, yeast, mushrooms, and toadstools.
Protozoa: a phylum or group of phyla that comprises the single-celled microscopic animals, which include amoebas, flagellates, ciliates, sporozoans, and many other forms. They are now usually treated as a number of phyla belonging to the kingdom Protista.
The answer is D. Just think how hard it would be to see a moth of that colour when just about everything during that time period is grey.
