Q: What law states that energy cannot be created or destroyed? Choices: - deposit of energy - conservation of force - difference of energy - conservation of energy A:
conservation of energy

(Question)
Q: What season is it in the southern hemisphere when it's winter in the northern? Choices: - Winter - Spring - autumn - summer A:
(Answer)
summer

Ques: Q: What are the two methods in which mutations arise in dna? Choices: - produced or spontaneous - accelerated or spontaneous - accelerated or random - induced or spontaneous A:
Ans: induced or spontaneous

(Q).
Q: What is used to recrystallize excess dissolved solute in a supersaturated solution? Choices: - starter crystal - energy crystal - fertilizer crystal - seed crystal A:
(A).
seed crystal

Ques:Q: What kind of waves are electromagnetic waves? Choices: - amplitude - curved - inverse - transverse A:

Ans:transverse

Q: What are models good for? Choices: - they are expensive to make - they are identical to the real thing - they are independent variables - they give us an idea of what the real thing is like A:
they give us an idea of what the real thing is like