Answer:
Mats of algae called stromatolites.
Explanation:
Example of a fossil organism that has been found from the late Precambrian period is stromatolites. stromatolites are layered sedimentary formations that are produced by photosynthetic cyanobacteria. These cyanobacteria produces adhesive compounds that joins sand and other rocky materials in order to form mineral called “microbial mats”.
The answer is a pathogen
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Anaerobic situations will maximum possibly be generated in a herbal water gadget with low degrees of dissolved oxygen (DO) this is infected through pollution with excessive biochemical oxygen demand (BOD) values.
The required details for Anaerobic conditions in given paragraph
Anaerobic situations arise while the uptake or disappearance of oxygen is extra than its manufacturing through photosynthesis or diffusion through bodily shipping from the encompassing surroundings. Oxygen is typically fed on through microbial respiratory on account of the provision of natural material. Two examples of obligate anaerobes are Clostridium botulinum and the bacteria which stay close to hydrothermal vents at the deep-sea ocean floor. Aerotolerant organisms, which can't use oxygen for growth, however tolerate its presence. Facultative anaerobes, which could develop with out oxygen however use oxygen if it's miles present.
Most anaerobes require an surroundings with a low oxidation-discount potential (Eh gradient), which may be finished in affiliation with low pH, tissue destruction, byproducts from cardio bacterial metabolism, or low oxygen content.
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They have a 50% chance of having an offspring with AO which is type A blood and a 50% chance of having an offspring with BO which is type B blood
Answer:
Crude oil is the main source
Explanation:
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