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Stack #4564466
| Question | Answer |
|---|---|
| . What Is Biodiversity? | Variety of life on Earth at all levels — genes, species, and ecosystems. |
| level of biodiversity | Species diversity,Genetic diversity,Ecosystem diversity |
| Species diversity | Number and variety of species in an area. |
| Genetic diversity | Variation in DNA within a species. |
| Ecosystem diversity | Variety of habitats and communities. |
| distribution | where different species live and how they are spread out across the Earth. penguins live in Antartica lions mainly live in Africa |
| Evolution | How species slowly change over many generations. |
| evidence | Clues that show evolution happened, like fossils, DNA, baby development, and similar body parts in different animals. |
| importance | Helps us understand where life comes from and why there are so many kinds of living things; also useful in medicine, like fighting bacteria and tracking viruses. |
| natural selection | It’s the process that helps species survive and adapt. animals or plants with helpful traits are more likely to survive and have babies. Giraffes with slightly longer necks could reach more leaves, so they survived better and passed on the trait. |
| Hippco | the main threats to biodiversity. |
| H | Habitat loss & fragmentation: Nature areas are destroyed or broken into pieces (like forests cleared for cities or farms). |
| I | Invasive species: Non-native plants or animals take over and push out the local species. |
| 1st p | Pollution: Air, water, and land pollution that harms plants and animals. |
| 2nd p | Population growth: More people means more land and resources are used, hurting wildlife. |
| c | Climate change: Changes in temperature, rainfall, and weather patterns affect where species can live. |
| o | Overexploitation: Overhunting, overfishing, or overusing plants and animals. |
| back ground extortion | Natural, slow extinction over time (~0.00001% of species per year). |
| endemic species | Species found only in one place. Most at risk if their habitat is lost. |
| mass extinction | Huge die-offs of many species at once. There have been 5 major events, and humans are causing the 6th, happening 100–1000× faster. |
| What is Conservation Biology? | The science of protecting and restoring biodiversity. |
| Endangered Species Act (1973) | Protects threatened or endangered species in the U.S. |
| IUCN Red List | A global list of species at risk of extinction. |
| CITES (1975) | Bans international trade of endangered species international treaty to protect biodiversity |
| What is species richness? | The number of different species in a region. |
| What is species evenness? | How evenly individuals are distributed among species. If a forest has 100 animals — 25 deer, 25 rabbits, 25 birds, and 25 squirrels — it has high species evenness |
| What causes biodiversity to increase toward the equator? | Stable climate, more energy, and larger geographic area. |
| Who proposed the theory of natural selection? | Charles Darwin and Alfred Wallace. |
| What is a keystone species? | A species whose removal causes ecosystem collapse. |
| What is the biggest current threat to biodiversity? | Habitat loss and fragmentation. |
| What is an invasive species? | non-native species that moves into a new place and causes problems for local plants and animals. |
| Give two examples of invasive species. | Lionfish and green iguana. |
| What is the difference between background and mass extinction? | Background = normal, slow; mass = rapid loss of many species. |
| What is the 6th mass extinction? | The current human-caused extinction event |
| What U.S. law protects endangered species? | The Endangered Species Act of 1973. |
| What is captive breeding? | Breeding endangered species in zoos to reintroduce into the wild. |
| Why are amphibians considered indicator species? | Their health reflects ecosystem conditions |
| What device protects sea turtles from shrimp nets? | Turtle Excluder Device (TED). |
| What is conservation biology? | The scientific study of protecting and restoring biodiversity. |
| Having a higher species diversity results in ecosystems | being more productive and more resilient |
| specialist species | species that can only live in a very specific environment or eat a very specific type of food. panda eats only bamboo |
| threatened species | a species that is likely to become endangered in the near future |
| How does the introduction of invasive species threaten biodiversity | by competing with native species for resources |
| endangered species | a species that is in serious danger of disappearing forever. |
| Where is biodiversity the greatest | tropical rainforest |
| Top upper part of a turtle shell is called- | carapace |
| indicator species | A type of plant or animal that shows how healthy the environment is. |
| exotic species | A plant or animal that comes from another place and is not native to the area |
| The most threated areas of high species diversity on earth is called | biodiversity hotspots |
Created by:
sophia souza