Which of the following is the amount or quantity of goods and services that consumers are willing to buy at various prices?

supply
demand
elasticity of demand
none of these

En el ecuador existieron comunidades prehispanicas que practicaban algun tipo de ritual de enterramiento como el que se describe en el articulo la solidaridad comenzo en las cabernas

Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles.b) the viral genome codes for specialized enzymes not in the host.c) the virus infects only those cells and species that can perform all the replication roles necessary.d) viruses can stay in a quiescent state until the host cell evolves this ability.

Describe the structure of a monosaccharide and name the three monosaccharides important in nutrition.