Test 3 SCI 225 Questions n answers 2024

Test 3 SCI 225What is an ecosystem? - correct answer a community of organism interacting with each other and their physical environment (biotic and abiotic) What is a community? - correct answer multiple species of organisms interacting with each other (biotic) what is a population? - correct answer one species What is species richness - correct answer the count, or total number of unique species within a given biological community, ecosystem, biome, or other defined area what is species abundance - correct answer the sum total of individuals from a given species within a given area what is species composition - correct answer species composition is defined as the number of different species present in an ecosystem, as well as the relative abundance of each of thoes species how to measure biodiversity - correct answer has to be more than one species and you measure specie richness and abundance What are corals? - correct answer - start their live as free-swimming young - once they find a hard bottom, they attach themselves and quickly change into a polyp What is the relationship between corals and zoo - correct answer zooxanthellae provide corals with food in the form of organic matter Corals provide zooxanthellae a safe place to live ____ are home to ___% of marine species - correct answer coral; 25%