An accident resulted in a man’s hand being cut off from his arm. paramedics arriving first on the scene
placed the cut-off hand in ice. the man and his hand were flown to a hospital, where doctors
successfully reattached the hand to his arm. explain, using one biological reason, why placing the hand
in ice improved the chances of saving it.

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

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.

This rapid change in species that rarely leaves behind fossil evidence is referred to as