One way in which elements differ from each other is the structure of the electron cloud in each element's atoms. In an electron cloud, an electron that is farther away from the nucleus has

plants need sunlight, water, and carbon dioxide to make food. plants use the raw materials of water, nutrients they absorb from soil, and carbon dioxide to make sugars the plant can use. energy from the sun and chlorophyll are also needed.

b.

the accuracy of the data.