When testing fertilizer on a tomato farm, one patch of soil is given fertilizer and another patch (the same size) is not. which one is the experimental group? a. the amount of rain b. the amount of sunlight c. the fertilized soil d. the unfertilized soil

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

Which of the following matches the organisms described with the correct domain? a. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycanb. archaea--multicellular, eukaryotic organisms that do not have cell wallsc. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sourcesd. bacteria--unicellular, eukaryotic organisms that always lack cell walls

What is the inability of an individual or a society to achieve a minimum standard of living known as ?