All amphibians are _____; they are totally dependent upon their environment to regulate body temperature and metabolic activity

In an emulsion, the liquid that has been broken down into small elements is called the:

A) External phase. B) Emulsified phase. C) Internal phase. D) Suspension phase.

Oral clefts result because of

A) Too much vitamin D B) An inborn error of metabolism C) Deficient calcium during embryogenesis D) Improper fusion during embryogenesis