<H3>1 The Nature of Data<H3>2 The Process of Science<H3>3 Soil Analysis<H3>4 Oxygen and Carbon Dioxide Cycling<H3>5 Population Growth<H3>6 Age Distribution and Survivorship<H3>7 Terrestrial Plant Community Assessment<H3>8 Stream Ecosystem Assessment<H3>9 Micro Community Assessment<H3>10 Sampling a Plant Community<H3>11 Sampling Animal Communities<H3>12 Species Diversity<H3>13 Primary Production in an Aquatic Community<H3>14 Competition<H3>15 Natural Selection<H3>16 Adaptations of Vertebrates to Their Environment<H3>17 Adaptations of Plants to Their Environment