12. in an ecosystem consisting of plants, bison, elk, and wolves in which the bison and elk are primary consumers and the wolves are predators, both the bison and elk depend on the plant that grows in the ecosystem. The wolves depend on the bison and the elk for food. assuming that the bison disappear over time, this will put less grazing pressure on the plants in the ecosystem and allow them to do better. This leaves the elk as the only primary consumer and prey in the ecosystem. predatory pressure will increase on the elk while competition for food would be more severe among the wolves.
13. Dams store water, provide renewable energy and prevent floods. Unfortunately, they also worsen the impact of climate change. They release greenhouse gases, destroy carbon sinks in wetlands and oceans, deprive ecosystems of nutrients, destroy habitats, increase sea levels, waste water and displace poor communities.
14. These students can use recycling methods such as reusing leftover food to feed chickens and repurposing their waste as fertilizer in order to convince their parents. the students can use certain livestock tips in order to convince their parents of the impact. One of those tips would be to use leftover food from lunch and dinner to feed the chickens, which is fine given that these animals are scavengers by nature. The waste produced by the chickens can then be used as a natural fertilizer for crops. we can say that these students can use recycling methods such as reusing leftover food to feed chickens and repurposing their waste as fertilizer in order to convince their parents.
rewrite it but not too long