(Question)
Q: What is the organ in which gas exchanges take place between blood and air? Read this paragraph and choose the correct option from the provided answers: Respiration begins with ventilation. This is the process of moving air in and out of the lungs. The lungs are the organs in which gas exchange takes place between blood and air. Choices: - heart - skin - kidney - lungs A:
(Answer)
lungs

(Question)
Q: Two important concepts, niche and habitat, are associated with what? Read this paragraph and choose the correct option from the provided answers: Two important concepts associated with the ecosystem are niche and habitat. Choices: - natural selection - plant - water - ecosystem A:
(Answer)
ecosystem

(Question)
Q: What do some animals grow to protect themselves in winter? Read this paragraph and choose the correct option from the provided answers: Choices: - scales - antennae - thin skin - thicker fur A:
(Answer)
thicker fur