Art historian; archaeologist
The answer would be a.
Biological catalysts are generally proteins (and a group of RNA molecules called ribozymes), but carbohydrates do not play such a role.
Answer:
Simple squamous epithelium,stratified squamous epithelium,pseudostratified columnar epithelium
Explanation:
The respiratory system is made up of many different types of tissues and they differ according to their locations in the respiratory system.
1.Simple squamous epithelium: It is found within the alveoles of the lungs. These cells are single layer,flat (squamous) cells. It controls the permeability of blood vessels in the lungs. When you inhale it allows more oxygen to be absorbed in the blood flows.
2.stratified squamous epithelium: It is found at mouth surface primarily tongue and throat . These cells are stratified that is they are many layered because everyday whatever we put in our mouth and throat it protects from wear and tear. It gives physical protection from pathogens as well.
3.pseudostratified columnar epithelium: It is a lining of the nasal cavity trachea and bronchi. This layer is ciliary to trap patheogen on entering into the lungs.
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These include materials with the oldest DNA evidence of human<span> habitation in North America. The DNA, </span>radiocarbon<span> dated to 14,300 years ago, was found in fossilized </span>human coprolites<span> uncovered in the </span>Paisley Five Mile Point Caves<span> in south-central Oregon.
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Plants convert carbon dioxide into water during photosynthesis.
