Photoreceptor proteins are light-sensitive proteins involved in the sensing and response to light in a variety of organisms. Some examples are rhodopsin in the photoreceptor cells of the vertebrate retina,phytochrome in plants, and bacteriorhodopsin<span> and bacteriophytochromes in some bacteria.
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Viruses are not considered "alive" because they lack many of the properties that scientists associate with living organisms. Primarily, they lack the ability to reproduce without the aid of a host cell, and don't use the typical cell- division approach to replication.
The Grand Canyon is a Canyon that exist where an ancient river once flowed. The hydrosphere (all of water on earths surface.) Slowly eroded away at the rock of the grand canyon until a Canyon was formed this water evaporated into the atmosphere then percerpertated back down creating a cycle that ended with the formation of the grand canyon.
Answer:
A conversion factor is a numeric expression that enables feet to be changed to chains as an equal exchange. A conversion factor is a number used to change one set of units to another, by multiplying or dividing. When a conversion is necessary, the appropriate conversion factor to an equal value must be used.
— https://www.nwcg.gov/course/ffm/conversions/21-unit-conversion-and-conversion-factors#:~:text=A%20conversion%20factor%20is%20a,equal%20value%20must%20be%20used.
B water pollution is the answer
