The Fossil Record Indicates That the First Homo Sapiens Originated

question 62

Short Answer

The fossil record indicates that the first Homo sapiens originated between 400,000 and 300,000 years ago.Homo erectus,who had a brain larger than Homo habilis and a skull more similar to H.sapiens,probably migrated from Africa about 2 mya.The fact that these species often existed in the same locations at the same time and their fossils share certain characteristics while displaying some intermediate characteristics suggests that these prehistoric ________ species may have reproduced with each other.

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Definitions:

Invested at

Typically implies allocating resources, such as time or money, into a venture, asset, or project with the expectation of receiving future returns.

Internal Rate of Return

A financial metric used to evaluate the profitability of potential investments, calculated as the interest rate that makes the net present value of all cash flows equal to zero.

Net Present Value

The difference between the present value of cash inflows and the present value of cash outflows over a period of time, used to assess the profitability of an investment or project.

Discount Rate

The interest rate used in discounted cash flow analysis to determine the present value of future cash flows.