There Has Been a Great Deal of Research, Using a Wide

question 18

Multiple Choice

There has been a great deal of research, using a wide variety of methods, examining the concordance rates for disorders such as schizophrenia and bipolar disorder. These studies have generally revealed higher concordance rates in ______ than in __________.

• A) monozygotic twins; adopted relatives
• B) adopted relatives; biological relatives
• C) biological relatives; adopted relatives
• D) dizygotic twins; monozygotic twins
• E) monozygotic twins; dizygotic twins

---

Definitions:

Coal

A combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams, used as a fossil fuel for producing electricity and heat.

Global Coal Supplies

The total quantity of coal available for use worldwide, encompassing both proven reserves and resources yet to be discovered.

Depleted

A condition where a significant amount of a resource or substance has been consumed or removed, often leading to scarcity.

Oil Sand

is a type of unconventional petroleum deposit, consisting of sand or sandstone impregnated with bitumen, a dense and extremely viscous form of petroleum.