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History, 24.10.2019 11:43 jjjp3993

Ecologists study how relationships between biotic and abiotic factors impact the many levels of organization on earth. what level of organization is defined as the interaction between organisms in a community and the environment in which they live? a) organisms b) ecosystems c) populations d) communities 4) according to the graph, what abiotic factor influences tadpole survival? a) size of pond b) cadmium dosage c) available food d) number of surviving tadpoles 5) which example best illustrates the biological concept of a community? a) all of the blue whales in the world. b) a herd of bison living in yellowstone park. c) the temperate grassland ecosystem in the american midwest. d) a tropical reef aquarium with many different types of fish and corals. 6) the moray eel looks ferocious but, in reality, it is a very shy solitary creature. teams of shrimp congregate in the burrows and caves where the eel resides and they move up and down the eel's body removing parasites and dead skin (which is eats! what type of symbiotic relationship does the moray eel have with the cleaner shrimp? a) commensalism b) mutualistic c) parasitic d) none, they just share the same habitat 7) the spider in this picture creates a web in the antlers of the deer. the spider gains a greater probability of catching prey due to the deer's mobility. this is a commensalistic relationship. what factor might change this commensalistic relationship into a parasitic relationship? a) the spider has a higher sensory system and is able to warn the deer of approaching prey. b) the spider prevents parasites from living on the deer. c) the spider lays eggs in the ear of the deer and the spiderlings eat the inner ear of the deer, sometimes causing deafness. d) the spider's web makes the deer look bigger and fiercer to it's prey. 8) this is the pond behind serge's house. there are lots of catfish swimming in this pond. trees ring the pond and rushes and irises live at the pond's edge. the bottom of the pond is sandy and serge likes to pick up flat rocks from the shallow water and skim them across the top of the water. this summer, serge has seen lots of dragon flies and mosquitoes at the pond also. all the catfish that live in the pond behind serge's house make up a of catfish. a) community b) family c) habitat d) population 9) this is the pond behind serge's house. there are lots of catfish swimming in this pond. trees ring the pond and rushes and irises live at the pond's edge. the bottom of the pond is sandy and serge likes to pick up flat rocks from the shallow water and skim them across the top of the water. this summer, serge has seen lots of dragon flies and mosquitoes at the pond also. what answer choice describes a community? a) the pond b) all the catfish in the pond c) rushes and irises, the dragonflies and mosquitoes, the catfish d) all the non-living parts of the pond, water, oxygen, sand, rocks 10) the mouse population of an area decreased last year. which abiotic factor would explain the population decrease? a) a decrease in rainfall b) a fatal bacterial disease c) an increase in owl population d) competition among the mice for food 11) an important biotic factor in this wetland, which impacts the populations of all the species that live in the wetland is/are a) water. b) oxygen. c) plants . d) sunlight. 12) black bears live is many different habitats. what is one abiotic feature of the black bears habitat, no matter where it lives? a) fish b) water c) other bears d) nuts and berries

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