Question: Q: What are small organelles and are the site of protein synthesis? Read this paragraph and choose the correct option from the provided answers: Ribosomes are small organelles and are the site of protein synthesis. Ribosomes are found in all cells. Choices: - nucleus - vacuoles - chloroplasts - ribosomes A:
Answer: ribosomes

Question: Q: Why does warm air rise higher in the troposphere? Read this paragraph and choose the correct option from the provided answers: Air in the troposphere is warmer closer to Earth's surface. Warm air is less dense than cool air, so it rises higher in the troposphere. This starts a convection cell. Convection mixes the air in the troposphere. Rising air is also a main cause of weather. All of Earth's weather takes place in the troposphere. Choices: - it is more dense than cool air - It contains hydrogen - it is less flourishing than cool air - it is less dense than cool air A:
Answer: it is less dense than cool air

Question: Q: What were the first animals to have true lungs and limbs for life on land? Read this paragraph and choose the correct option from the provided answers: Amphibians were the first animals to have true lungs and limbs for life on land. However, they still had to return to water to reproduce. That's because their eggs lacked a waterproof covering and would dry out on land. The first fully terrestrial vertebrates were amniotes. Amniotes are animals that produce eggs with internal membranes. The membranes let gases but not water pass through. Therefore, in an amniotic egg, an embryo can breathe without drying out. Amniotic eggs were the first eggs that could be laid on land. Choices: - birds - mammals - reptiles - amphibians A:
Answer:
amphibians