All flashcards
Flashcard 1: What is the result of coral bleaching on marine ecosystems?
Answer: Loss of biodiversity in coral reef habitats. Stressed corals expel algae, often dying.
Flashcard 2: What is an invasive species?
Answer: Non-native species that cause harm to ecosystems. Outcompete native species and disrupt food webs.
Flashcard 3: Which human activity is a major cause of deforestation?
Answer: Logging for timber and land clearing for agriculture. Both remove trees and clear forested areas.
Flashcard 4: Name a key method for protecting endangered species.
Answer: Establishing protected areas and wildlife reserves. Safe zones prevent habitat loss and hunting.
Flashcard 5: What is the significance of keystone species?
Answer: They play a crucial role in ecosystem functioning. Their loss causes disproportionate ecosystem collapse.
Flashcard 6: How does land conversion for agriculture impact biodiversity?
Answer: Results in habitat destruction and species loss. Natural ecosystems replaced with farmland.
Flashcard 7: How does noise pollution affect wildlife?
Answer: It disrupts communication and breeding behaviors. Loud sounds interfere with animal activities.
Flashcard 8: Identify a major effect of urbanization on biodiversity.
Answer: Loss of habitat and increased pollution. Cities replace natural habitats with infrastructure.
Flashcard 9: Name a key method for protecting endangered species.
Answer: Establishing protected areas and wildlife reserves. Safe zones prevent habitat loss and hunting.
Flashcard 10: Identify a human activity that leads to soil erosion.
Answer: Deforestation and unsustainable agricultural practices. Both remove protective vegetation cover.
Flashcard 11: How does tourism affect biodiversity?
Answer: Can lead to habitat disturbance and pollution. Human activities can damage fragile ecosystems.
Flashcard 12: Identify a consequence of agricultural runoff.
Answer: Eutrophication leading to dead zones in water bodies. Excess nutrients cause oxygen depletion.
Flashcard 13: What is the impact of oil spills on marine life?
Answer: Oil spills harm marine organisms and habitats. Toxic substances coat organisms and destroy habitats.
Flashcard 14: Which conservation practice involves habitat restoration?
Answer: Reforestation and wetland rehabilitation. Rebuilds damaged natural ecosystems.
Flashcard 15: What is the primary source of ocean acidification?
Answer: Increased CO2 absorption by the ocean. Dissolves in seawater, lowering ocean pH.
Flashcard 16: Which treaty aims to protect biodiversity globally?
Answer: The Convention on Biological Diversity (CBD). International agreement for conservation efforts.
Flashcard 17: How does pollution affect biodiversity?
Answer: It contaminates habitats and affects species health. Toxic substances harm organisms and habitats.
Flashcard 18: Which greenhouse gas is most associated with human activity?
Answer: Carbon dioxide (CO2). Released primarily from fossil fuel combustion.
Flashcard 19: What is the impact of plastic pollution on marine life?
Answer: Ingestion and entanglement harm marine organisms. Animals eat plastic or get trapped in debris.
Flashcard 20: What is a wildlife corridor?
Answer: A passage that connects fragmented habitats. Links separated habitat areas for movement.
Flashcard 21: Which human activity is a major cause of deforestation?
Answer: Logging for timber and land clearing for agriculture. Both remove trees and clear forested areas.
Flashcard 22: How do pesticides impact biodiversity?
Answer: They can harm non-target species and reduce diversity. Chemicals kill beneficial insects and soil organisms.
Flashcard 23: Which option describes genetic diversity?
Answer: Variation in genes within a species. Genetic variety within populations of same species.
Flashcard 24: How does climate change affect biodiversity?
Answer: It alters habitats and causes species migration. Temperature changes force species to relocate.
Flashcard 25: What is biodiversity?
Answer: The variety of life in the world or a particular habitat. Encompasses all living organisms and their genetic variations.
Flashcard 26: What is the result of monoculture farming on biodiversity?
Answer: It reduces genetic and species diversity. Single crops eliminate habitat variety.
Flashcard 27: What is the impact of industrial agriculture on biodiversity?
Answer: It leads to habitat loss and pollution. Large-scale farming destroys natural ecosystems.
Flashcard 28: Which process leads to desertification?
Answer: Overgrazing and unsustainable land use practices. Degradation turns fertile land into desert.
Flashcard 29: What is the role of conservation biology?
Answer: To study and protect biodiversity. Scientific field focused on preserving species.
Flashcard 30: Identify a consequence of global warming on species distribution.
Answer: Shifts in the range of species' habitats. Temperature increases force range shifts.