Viruses are actives only when they are inside a living cell.

True
False

How many trophic levels are there in the following food chain? phytoplankton - shrimp - perch - pike - osprey

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

What is the process of a new plant growing from its seed into a seedling? primary growth fertilization pollination germination