In an Australian outback, kangaroos feed on grasses and shrubs. The overpopulation of kangaroos can lead to overgrazing, which affects the availability of vegetation for other wildlife such as birds and insects. Predators like dingoes help control the kangaroo population, ensuring the balance of the ecosystem. Which organism is considered a keystone species in this scenario? Birds Grasses Dingoes Kangaroos

When common garden spiders are present, insect diversity is much higher than when they are absent. Common garden spiders are most likely a      ecosystem engineer     dominant species     keystone species

For Black or Brown bears Identify the biotic and abiotic factors that affect the community as well as how the community affect these factors.

for species inasion what are the local negative ecological impacts of two example invasive species

1)  Based on the food web, would you consider woolly mammoth a keystone species? Why or why not?

An ecologist studying the availability of nutrients and the distribution of the plants that live in this habitat is working at this level. An ecologist studying the size and distribution of the Karner blue butterfly is working at this level. An ecologist studying the mutualistic relationship between the Karner blue butterfly and ants is working at this level. An ecologist studying behavior of the caterpillars when they are at different larval stages is working at this level. < Previous a Choose ] [Choose ] Community Organismal Ecosystem Population ThouT [Choose ] [Choose] No new data to save. Last checked at 6:55pm S C

Which of the following best describes bottom up control of an ecosystem? toxic compounds in mature leaves prevent herbivory by some consumers keystone predation of sea otters on sea urchins mesopredator consumption of small mammals parasitoids infesting a tomato hornworm

Using the African Savannah food web below, describe what would happen to various animals and plants if Impala were hunted to extinction? Remember to consider how various levels might be helped, harmed, or unaffected. Must explain impact on at least two different trophic levels. African Grassland Food Web Cheetah Leopar Lion Hunting dog Glraffe Impala Babeon Wildebeest Acacia Grames Termites Zebra

Which of the following threats to terrestrial biomes is FALSE? O Exploration of oil and gas threaten both boreal forest and tundra ecosystems. O Climate change, farming practices, and overgrazing are leading to the desertification of tropical savannas. O Logging for timber poses a greater threat to tropical rain forests compared to effects of large-scale agriculture. O Human-mediated changes in the frequency and intensity of fire are threatening Mediterranean shrublands.

Explain the immediate and secondary effects or removing others from a kelp forest ecosystem. In your response, use the word: keystone species, biodiverse/biodiversity USE THIS SETENCE STARTER: the immediate effect of removing otters from the ecosystem is... The secondary effect of removing otters from the ecosystem is...