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| 16729926065 | Types of Natural Selection | directional, stabilizing, disruptive | 0 | |
| 16729926066 | adaptive radiation | a process where organisms diversify rapidly into new forms, particularly after a change in the environment that opens up to new niches. often used as a measure of the health of biological systems. THREE LEVELS: Genetic diversity - diversity of genes within a species. Species diversity - diversity among species ecosystem diversity- diversity of a a habitat in a given area | 1 | |
| 16729947926 | Biodiversity | the variety of life in the world or in a particular habitat or ecosystem. | 2 | |
| 16729947927 | biodiversity hotspots | a region with a significant reservoir of biodiversity that is threatened with destruction. twenty five area of in the world today qualify under this definition. these sites support nearly 60% of the worlds plant, bird, etc. species with a large proportion of endemic species. | 3 | |
| 16729947928 | ecological succession | gradual change in living communities that follows a disturbance. May be initiated either by formation of new, unoccupied habitat or by some form of disturbance of an existing community. | 4 | |
| 16730018361 | Desertification | Degradation of land, especially in semiarid areas, primarily because of human actions like excessive crop planting, animal grazing, and tree cutting. | 5 | |
| 16730018362 | desertification remediation | regulating grazing, slash and burn, anchoring soil, installing sand fences, regulate water resources, planting legumes, installing sand fences, distributing solar cookers. | 6 | |
| 16730018363 | Salinization | water that is not absorbed into the soul eventually evaporated and leaves behind dissolved salts in topsoil. symptoms include: stunted crop growth; lower yield; eventual destruction of plant life. Remediation: takes land out of production for 2-5 years, installing underground drainage pipes, flushing soil with fresh water, planting salt tolerating plants. | 7 | |
| 16730018364 | Waterlogging | saturation of the soil by groundwater sufficient to prevent or hinder agriculture. | 8 | |
| 16730018365 | deforestation | conversion of forests to non-forested areas. | 9 |
