Answer: D) There are no fossils of dinosaurs in rocks above the iridium layer.
Explanation: i’m not good at explaining but the meteorite which caused mass extinction to dinosaurs left behind iridium. if there was a mass extinction, then there is no more dinosaurs and there won’t be any fossils left of them to be found above of the iridium layer as they are allllll gone. good luck with school everyone!
They do not need to be concerned because of the fact they <span>are not elected, they are appointed for life. </span>
Answer:
In the deep ocean layers where the sunlight does not reach, these organisms that are chemoautotrophic use sulfides from the hydrothermal vents to perform chemosynthesis instead of photosynthesis.
Explanation:
Chemoautotrophic organisms are the ones that are adapted to the absence of sunlight. Such organisms identify electron donors in their vicinity and derive energy from the oxidation reactions that these electron donors (mostly, inorganic compounds) undergo.
The major reason for the development of such a trait in these organisms is the depth that they live at. On deep-sea floors, there is an abundance of sulfides. Thus, the organisms living on there make use of the sulfides to fix carbon and obtain energy the required energy to sustain.
The process of chemosynthesis occurring on deep-sea floors due to the presence of carbon, sulfides, and oxygen culminates in the production of organic materials as an end result which the organisms feed on and sustain even when there is no sunlight available. These organisms majorly belong to the bacteria species called Archaea and Extremophiles.
Organisms have adaptation so they can change with the environment around them to fit in. For example if there is a very hot climate, a rabbit has the adaptation of giant ears that are thin to act like a air ventilation system.
He reformed the church so that he would change religion forever
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