The fossil remains of a terrestrial organism are found in canada. these fossils appear to be similar to fossils found in the midwestern united states, and also to fossils found in northern europe. what would be the best first step in a scientific procedure for determining if one of these organisms could be an ancestor of the others?

Pl which diagram illustrates prophase?

Read this summary of a scientific theory: "cells are the most basic structural and functional units of life. all living organisms are made up of one or more cells. all cells that are alive in the world today came from pre-existing cells." which of the following would require this theory to be modified? -a.) a survey finds that a majority of people believe viruses carry out the basic processes of life. -b.) a prominent scientist says she feels strongly that one day the theory will be challenged by life on other planets. -c.) the dna of unicellular and multi-cellular organisms is shown to have many fundamental similarities. -d.) scientific observations show that microscopic organisms living in the deep ocean are not made up of cells.

What is the goal of cellular respiration