(Question)
Q: What system is the spinal cord related to? Read this paragraph and choose the correct option from the provided answers: Some people recover from spinal cord injuries. But many people are paralyzed for life. Thanks to the work of Christopher Reeve ( Figure below ), more research is being done on spinal cord injuries now than ever before. For example, scientists are trying to discover ways to regrow damaged spinal cord neurons. Choices: - circulatory system - lymphatic system - digestive system - nervous system A:
(Answer)
nervous system

(Question)
Q: In what do substances combine chemically to form a new substance? Read this paragraph and choose the correct option from the provided answers: A mixture is a combination of two or more substances in any proportion. This is different from a compound, which consists of substances in fixed proportions. The substances in a mixture also do not combine chemically to form a new substance, as they do in a compound. Instead, they just intermingle and keep their original properties. The lemonade pictured above is a mixture because it doesn't have fixed proportions of ingredients. It could have more or less lemon juice, for example, or more or less sugar, and it would still be lemonade. Choices: - suspension - component - element - compound A:
(Answer)
compound

(Question)
Q: What does the central cell develop into after double fertilization? Read this paragraph and choose the correct option from the provided answers: Choices: - endocell - xygote - exosperm - endosperm A:
(Answer)
endosperm