Q: Life itself could not exist without what energy, which plays a vital role in photosynthesis? Choices: - time energy - spin energy - magnetic energy - light energy A:
light energy

(Question)
Q: Roots grow in length and width from the primary and secondary what? Choices: - pistil - frill - leaf - meristem A:
(Answer)
meristem

Ques: Q: An atomic symbol is used to represent what? Choices: - electron shell - mole - weight - element A:
Ans: element

(Q).
Q: What happens to a substance in a liquid state when the temperate is lowed? Choices: - it melts - it evaporates - it dissipates - it solidifies A:
(A).
it solidifies

Ques:Q: Pacemaker cells stimulate the spontaneous contraction of cardiac muscle as a functional unit, called a what? Choices: - coenocyte - tapetum - adipocytes - syncytium A:

Ans:syncytium

Ques: Q: Why do sodium and chloride ions attract each other? Choices: - sulfides attract - magnetism - like attracts like - opposites attract A:
Ans:
opposites attract