Tina is making a smoothie. First, she puts fruit in the blender. Then, she adds milk and some ice. Next, she turns on the blender to cut up and blend the ingredients. Tina now has a smoothie. Which of the following is the best description of her smoothie? A. a single substance B. a mixture of different substances C. three substances, but not a mixture D. both a single substance and a mixture

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

This is the nitrogenous base only found in rna

Why do mountaineers become breathless as they reach high altitudes