Q: When iron and sulfur are mixed together in a certain ratio and heated, what do they become? Choices: - iron oxide - rust - sulfuric acid - iron sulfide A:
iron sulfide

(Question)
Q: What chromosome determines the sex of an organism? Choices: - ribosome - S chromosome - autosome - sex chromosome A:
(Answer)
sex chromosome

Ques: Q: What organism captures light energy and converts it to chemical energy inside its cell? Choices: - autotrophs - plants - insects - phototrophs A:
Ans: phototrophs

(Q).
Q: What force explains why a tennis ball bounces differently on different surfaces, and shoes slip on some surfaces but stick on others? Choices: - kinetics - vibration - temperature - friction A:
(A).
friction

Ques:Q: What are chemical messengers that control sexual development and reproduction? Choices: - lipids - proteins - neurotransmitters - sex hormones A:

Ans:sex hormones

Q: What type of energy is stored in an object because of its position or shape? Choices: - magnetic - mechanical - kinetic - potential A:
potential