Answer: magnesium atom
Explanation:
magnesium atom
The chlorophyll molecule consists of a central magnesium atom surrounded by a nitrogen-containing structure called a porphyrin ring; attached to the ring is a long carbon–hydrogen side chain, known as a phytol chain.
The answer is D.
An endothermic reaction involves absorbing heat whereas an exothermic involves releasing heat.
C. The sun, this gives energy and to animals and food for plants
No, the chemical equations for both processes are evidence that matter and energy or neither created nor destroyed
Keratoacanthoma: a clinically distinct variant of well differentiated squamous cell carcinoma.
What is squamous cell carcinoma?
Squamous cell carcinoma (SCC) of the skin is the second most prevalent type of skin cancer, distinguished by aberrant, rapid squamous cell proliferation. Most SCCs are treatable if detected early.
Skin squamous cell carcinoma is also known as cutaneous squamous cell carcinoma (cSCC). Adding the word "cutaneous" distinguishes it as a skin cancer from squamous cell malignancies that can form inside the body, such as the mouth, throat, or lungs.
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