Give an example of a symbiotic relationship and write a paragraph explaining each one.

What economic effects might result from the depletion of groundwater supplies from the ogallala aquifer? need to know asap

The affordable care act has expanded mental health and substance abuse benefits to 62 million people and is an addition to the mental health parity act of 2008. the changes and additions require mental health coverage in small group and individual plans where people were not previously covered. what is the biggest benefit of these changes? what major challenges are still associated with mental health coverage? explain your reasoning.

Why do rna viruses appear to have higher rates of mutation? a) rna nucleotides are more unstable than dna nucleotides. b) replication of their genomes does not involve proofreading. c) rna viruses can incorporate a variety of nonstandard bases. d) rna viruses are more sensitive to mutagens.