What are the barriers to cleaning up soil that has been polluted from salinization?

Which of the following is an oxidation-reduction reaction? (pictured below)

Recombinant dna (rdna) creates offspring which are genetically identical to the parent is the process of breeding only organisms with desirable traits involves the removal of the nucleus of a cell combines genes from organisms of different species in a lab

Aquaternary consumer species would be expected to have a smaller population than a secondary consumer species. select the best answer from the choices provided t f