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Ecosystems
Science
| Question | Answer |
|---|---|
| What is weather? | The day to day condition of Earth's climate |
| What is climate? | The average conditions over long periods of time |
| What is a region's climate defined by? | Year after year patterns of temperature and precipitation |
| What is the greenhouse effect? | The process in which certain gases(carbon dioxide, methane, and water vapor) trap sunlight energy in Earth's atmosphere |
| What is a habitat? | The place where an organism lives out its life |
| What is a niche? | The role that a species plays in a community |
| What is a resource? | Any necessity of life, such as water, nutrients, light, food, or space |
| What does the competitive exclusion principle state? | That no two species can occupy exactly the same niche in exactly the same habitat at exactly the same time. |
| What happens if two species attempt to occupy the same niche? | One species will be better at competing for limited resources and will eventually exclude the other species |
| What is predation? | An interaction in which one animal(predator) captures and feeds on another animal(prey) |
| What is herbivory? | An interaction in which one animal(herbivore) feeds on producers(plants) |
| What can herbivores do in relation to plant populations? | Affect both the size and distribution of plant populations in a community and determine the places that certain plants can survive and grow |
| What is a keystone species? | A single species that is not usually abundant in a community |
| What does symbiosis mean? | "Living together" |
| What are the three main types of symbiotic relationships? | Mutualism, commensalism, and parasitism |
| What is mutualism? | A relationship in which both species benefit from their relationship |
| What is commensalism? | A relationship in which one species benefits and the other is neither benefited or harmed |
| What is parasitism? | A relationship in which one species derives benefits at the expense of the other |
| What is ecological succession? | A series of predictable changes that occur in a community over time |
| Over the course of succession, does the number of species present typically increase or decrease? | Increase |
| Primary succession begins in an area with ____. | no remnants of an older community |
| What is a pioneer species? | The first species to colonize barren areas |
| When does secondary succession occur? | When existing communities are not completely destroyed by disturbances |
| How are biomes described? | In terms of abiotic factors like climate and soil type, and biotic factors like plant and animal life |
| What is the photic zone? | The sunlit region near the surface in which photosynthesis can occur |
| What are benthos? | Organisms that live attached to or near the bottom of lakes, streams, or oceans |
| What is a wetland ecosystem? | An ecosystem in which water either covers the soil or is present at or near the surface for at least part of the year |
| What is an estuary? | A kind of wetland ecosystem formed where the river meets the sea; the water here is brackish, a mixture of salt-water and fresh-water |
| Ecologists typically divide the ocean into what zones? | Intertidal zone, coastal ocean, and open ocean |
| What is population density? | The number of individuals per unit area |
| What is distribution? | How individuals in a population are spaced out across the range of the population -- randomly, uniformly, in clumps |
| When does logistic growth occur? | When a population's growth slows and then stops, following a period of exponential growth |
| What is demography? | The scientific study of human population |
Created by:
alov9636
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