These are the basic building blocks of all living things. * A. DNA
B. Cells
C. Genes
D. Chromosomes

How many major plates cover the earth

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

Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above