Q: What have approximately the same mass as protons but no charge? Choices: - atoms - reactions - electrons - neutrons A:
neutrons

(Question)
Q: What is the most numerous species on the planet? Choices: - trees - viruses - humans - bacteria A:
(Answer)
bacteria

Ques: Q: Compounds that form from two or more nonmetallic elements are called what? Choices: - ionic bonds - valent bonds - hydrogen bonds - covalent bonds A:
Ans: covalent bonds

(Q).
Q: What produces all the cells of the root and the root cap? Choices: - somatic meristem - interior meristem - algal meristem - apical meristem A:
(A).
apical meristem

Ques:Q: Which system consists of all the bones of the body? Choices: - circulatory system - nervous system - digestive system - skeletal system A:

Ans:skeletal system

Q: A spontaneous change process called neutrino oscillations can occur only if neutrinos have what property? Choices: - velocity - temperature - color - mass A:
mass