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

CA least tern ENDANGERED ANIMAL is  CA least tern questionbases on the bird CA least term  Reasons for Endangerment Explain the various factors that have led to this species’ current plight. Expand on these points individually, based on your species’ unique story.  Domino Effects As we’ve learned, species are not islands unto themselves; they are integrated with many other organisms in trophic relationships, mutualisms, competition, etc. How is the absence of this species (or its lowered population size) likely to impact the other members of its habitat? (If findings specific to this point are available, please include them – otherwise, I’m asking you to speculate based on what you’ve learned about the biology of this organism.)  Conservation Efforts Discuss past, current, and proposed efforts to conserve this species. Are these strategies effective? Are they realistic? What is the outlook for this organism?

There are many theories that explain why there is higher species richness in the tropical rainforest than the temperate forests. Provide two biotic factors and two abiotic factors explanation.

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

Rabbits in Australia were once overabundant and decimated the vegetation. Why are the rabbits in Australia not an example of a keystone species?

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

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.