Chapter 58, Problem 2TY

Summary Introduction

Introduction: An observation was made that 580 species of invertebrates that were bottom-dwelling were found in the lake Baikal in Siberia, which is a very old, temperate and unglaciated lake. An observation was also made that only 4 species of invertebrates that were bottom-dwelling were found in the lake Great Slave, which is a much larger, was glaciated earlier and lies at the same latitude in North Canada.