Of the 21 amino acids that are the building blocks for proteins, how many must come from the foods you eat?

10
6
11
9

Which of the following claims does the author support the least

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

The steps in the formation of extrusive igneous rocks are listed below in an incorrect order: 1. rock melts due to high temperature. 2. rock is buried deep under earth's surface. 3. magma is forced out of earth's surface during volcanic eruption. 4. lava cools and crystallizes to igneous rock. which of these best shows the correct order of steps in the formation of extrusive igneous rocks? 1, 3, 4, 2 2, 1, 3, 4 3, 4, 2, 1 4, 2, 1, 3