Answer:
They are formed by mixing a primary and a secondary color.
Explanation:
Thats why some colors have two word names such as blue-green, red-violet, and yellow-orange.
Answer:
D
Explanation:
Feeling excessively sad or low. Confused thinking or problems concentrating and learning. Extreme mood changes, including uncontrollable “highs” or feelings of euphoria. Prolonged or strong feelings of irritability or anger. - nami.org
these would all cause sudden changes in behaviour
The sentence needs commas because the participial phrase is essential.
