They are made up of nitrogen bases,sugars,and a phosphate group
Answer will be b for question
A(n) ___ is a group of terrestrial communities that covers a large area and is characterized by certain soil and ____ conditions and particular types of plants and animals
Answer:
The alkali metals lithium, sodium, potassium, rubidium, cesium, and francium constitute group 1 of the periodic table. Although hydrogen is in group 1 (and also in group 17), it is a nonmetal and deserves separate consideration later in this chapter.
Elements: Francium; Lithium; Potassium; Rubidium...
Explanation: