Illegal Substances Remain in Urine for Various Periods of Time

question 27

Multiple Choice

Illegal substances remain in urine for various periods of time: cocaine for approximately __________, marijuana for __________ or longer.

• A)24 hours; one week
• B)48 hours; two weeks
• C)72 hours; three weeks
• D)96 hours; four weeks

---

Definitions:

Allopatric Isolating Mechanisms

Biological barriers that prevent species from interbreeding and producing fertile offspring when they are geographically separated.

Equilibrium Isolating Mechanisms

A term not widely recognized as a standard biological concept and may refer to mechanisms maintaining equilibrium in isolated populations; NO.

Hybrid Inviability

A post-zygotic barrier where hybrid offspring fail to develop properly or survive to reproductive age.

Interspecific Embryo

An embryo that results from the fusion of gametes from two different species, used in various scientific research to understand reproductive and genetic possibilities.