Where is the best place to find information about the hazards that area associated with a compound

This is the diveristy of ecosystems natural communites and habits it is the variety of ways that species interact with each other and their environment

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.

In the sentence "a mining company will consider the distribution of coal when deciding how to mine the coal," what does the word distribution mean?