Writing Prompt: Earth's core is not directly observable by humans. According to the article, how
did scientists use a model to understand properties of the planet's core? How did
this model improve on previous theories about the structure of the Earth's core?

Which of the following options describes photosynthesis correctly? question 8 options: a plant uses carbon dioxide and water to make oxygen and nitrogen a plant breaks down sugar to make carbon dioxide. a plant uses sunlight, carbon dioxide, and water to make sugar and oxygen. a plant uses sunlight to break down sugars for digestion into water and oxygen.