The Greatest Rate of Extinction of All Time Is/was Probably

question 12

Multiple Choice

The greatest rate of extinction of all time is/was probably caused by ____.

• A) an ice age
• B) unknown reasons
• C) formation of Pangea
• D) human activity
• E) asteroid impact

---

Definitions:

Myosin

A motor protein known for its role in muscle contraction and movement in other types of cells, interacting with actin.

Proteins

Large molecules composed of one or more chains of amino acids in a specific order, determined by the base sequence of nucleotides in the DNA coding for the protein, serving a vast array of functions within organisms.

Riboflavin

A B-vitamin (B2) essential for energy production and cellular function, found in foods like milk, meat, and green vegetables.

Coenzyme FAD

A redox-active coenzyme associated with various enzymes and involved in several important metabolic reactions, full name flavin adenine dinucleotide.