Plant cells contain chloroplasts, which govern the photosynthesis in the cell.
Plant cells also have a large central vacuole, which is necessary to contain the water for photosynthesis.
These both benefit the cell as they provide for photosynthesis.
R-selected species often experience EXPONENTIAL growth in population, giving a J-SHAPED curve on a graph.
R-selected species are those that have high growth rate. These species may produce many offspring but not all will survive into adulthood.
Hydrogen (62.9%), oxygen (almost 24%), carbon (nearly 12%), nitrogen (nearly 0.6%), calcium (0.24%) and phosphorus (0.14%).