Snottites Are Biofilms Found in Deep Caves That Are Filled

question 60

True/False

Snottites are biofilms found in deep caves that are filled with toxic H₂S gas, and are formed by archaea.

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Definitions:

Umbilical Cord

A flexible cord that connects a fetus to the placenta, delivering oxygen and nutrients and removing waste products from the fetus.

Zygote

A fertilized egg cell that results from the union of a female gamete (egg) with a male gamete (sperm).

Concrete Operations

a stage in Jean Piaget's theory of cognitive development during which children gain the ability to think logically about concrete events.

Preoperational

A stage in Piaget's theory of cognitive development, occurring roughly between the ages of 2 and 7, characterized by symbolic thinking, egocentrism, and a lack of operational thought.