Question: The Produces secondary phloem and xylem tissue, adding to a tree's girth. Answer: The "vascular cambium" produces secondary phloem and xylem tissue, adding to a tree's girth.
Key physical features. All three species share similar physical characteristics - a relatively small body and a 'robust' or strongly built skull including large lower jaws with extremely large molar teeth.
Answer: D) The number of atoms of each element of the protein
Explanation: A chemical formula of a protein or any compound is the representation of the number of atoms of each element present in that protein or compound using chemical symbols and numbers. A symbol of an element consists of either the initial letter or the initial letter with one small letter from its name. Examples: symbol of carbon atom is C and the symbol of calcium atom is Ca. In writing chemical formula of a compound, the number of atoms of an element present in the compound is usually written as a subscript to the symbol of that element. Example: The chemical formula of glucose is C6H12O6, this means that there are six carbon atoms, twelve hydrogen atoms and six oxygen atoms in one molecule of glucose.