An amoeba is a one-celled organism. The cell theory states that which of the following characteristics of amoebas must be true?All amoebas have a regular, spherical shape. All amoebas move rapidly using a cilia. All amoebas have organelles called chloroplasts. All amoebas come from other amoebas.

Name the element in group 17, period 2. (periodic table)

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

Draw the lewis dot structure for each of the following polyatomic ions