Chapter 2, Problem 3S

Summary Introduction

To construct:

An argument that indicates the influence of water of life on earth as efforts are made by NASA to search for signs of life on Mars have focused on the search for evidence of liquid water rather than looking directly for biological organisms.

Introduction:

Water is the main constituent on earth as it forms lakes, streams and oceans. It is found in the aquatic living organism. The human body is made up of $70$ percent of water. It is a transparent, tasteless and odorless chemical substance. It is made up of hydrogen and oxygen.