Answer:
The answer is option is A.
a photopsin is a protein of a photo pigment within cone photoreceptors.
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Nucleic and amplification test
Answer:
A gray soft metal you can cut with a knife
Explanation:
Sodium is a delicate metal and can be cut with a tough cut with a bit of work by fair driving it through, not sawing it
They both reproduce and have to do something with life
Answer:
Relative dating is the technique to calculate the age of an ancient materials in comparison to another material's age. Layer A is less older, if layer B lies beneath it. Layer A may be 2.5 to 3 million years old.
Explanation:
Before discovery of radioactive carbon dating method, geologists make use of relative dating method in order to determine the age of rock or fossils. The relative dating procedure often referred to as stratigraphy. Though this procedure is not capable of predict absolute age or dating. In relative dating, is mainly based on the fact that the older rock layers will be deeper in respect to the less older rock layer.