What term is used in place of "recommended daily allowance" (RDA) when sufficient data are not available to establish RDA values for a specific nutrient?

The term that is used in place of 'recommended daily allowance"  when sufficient data are not available to establish RDA values for a specific nutrient is called Adequate intake (AI)

Explanation:

This is used as a substitution of recommended daily allowance if  sufficient evidence is not given to calculate the ERA.

Values are based on experiment where the value of  mean nutrient is taken from a healthy group of people.

Foe example nutritional stages of normal growth,maintenance of normal circulating nutrient value or general health.

It is used to establish ERA when the information is inadequate.

It is an indication where more research is needed to determine the mean,distribution of requirement for a specific nutrient,degree of confidence etc.

an adaptation is a change or process by which an organism takes to be better suited for its environment. for example; migration is a behavioral adaptation, this is needed because birds are not built to last extremely cold climates. there are different adaptations because there are different species needing to adjust to different things, bears don't migrate; they hibernate.

protocol for imps extraction focusing on membrane protein extraction, solubilisation, and purification.