Which organisms are both secondary and tertiary consumers in this food web? -chemosynthetic bacteria and amphipods -zooplankton and mussels -ratfish and octopuses -galatheid crabs and zoarcid fishwhich of the following is most likely to cause the greatest disruption to an ecosystem?   emptying an aquarium containing non-native species into a local waterwaycutting down a small cedar tree to make holiday decorationscleaning the windshield of a car with an alcohol-based glass cleanermowing the lawn in a city parkduring ecological succession, how does the growth of young hardwoods affect the organisms living in an ecosystem? grasses and low shrubs are unable to obtain the amount of light they need to survive, so there are small numbers of them. the trees provide shelter and food for a variety of mammals, insects, and birds. in autumn, falling leaves provide a source of energy for decomposers such as fungi. all of the above