Matisse eventually abandoned the use of optical colors, using only colors seen in white daylight. true false

Explanation:

Henri Matisse was a french painter well-known by his use of colour in his paintings. Actually, he was identified with fovism, which is a pictorial french movement characterised by its provocative use of colour.

Therefore, if Matisse belonged to fovism, then he never abandoned the use of optical colours. It's important to know that optical colours mixing is a phenomenon where a viewer perceives colour as a result of superposition of many colours.

answer: the exterior temperature of commercial jet planes as they leave the stratosphere and return to the ground increases steadily.

explanation:

the lower most layer of atmosphere is troposphere which extends from 0 to 12 km above the surface of the earth. the temperature initially decreases as distance is increased from the earth's surface. commercial jets fly in lower part of the stratosphere. the stratosphere extends upto 50 km. the temperature in stratosphere starts rising again due to presence of ozone which traps the uv rays.

thus, when the planes leave the stratosphere and return to the ground, the exterior temperature increases steadily.

see earlier answer