B. Crystalline structure
C. Types of chemical elements
And
D. Amounts of chemical elements
I'd say the answer to this one is B, skunks and toads have a predator-prey relationship. Good Luck!
Answer:
D. glycosidic link
Explanation:
A glycosidic link is a covalent bond that holds two monosaccharides together.
Hope that helps.
Answer:
a green pigment, present in all green plants and in cyanobacteria, responsible for the absorption of light to provide energy for photosynthesis. Its molecule contains a magnesium atom held in a porphyrin ring.
