Answer:
B. Histone because they are a family of small positively charged proteins.
Answer: <u><em>Botany is the scientific study of plants. The ancient Greek Theophrastus (371–286 B.C.E.) is known as the father, or founder, of botany. He wrote two large books, On the History of Plants and On the Causes of Plants.</em></u>
Answer:
Plants require 17 essential elements for growth: carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), potassium (K), sulfur (S), cal- cium (Ca), magnesium (Mg), boron (B), chlorine (Cl), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni), and zinc (Zn).