I don’t know the answer yet, I’ll reply to my comment with it, but merry Christmas to you too!!
The Kangaroo Rat and the common tree shrew is familiar because the kangaroo rat and the tree shrew have the same class: Mammalia, same phylum: Chordata, and the same kingdom : Animalia. They both are identical because they are small look like small rats etc.
<span>It is calculated as follows:
1.446x10^9/6.025x10^4=0.24x10^5=2.4x10^4. Therefore, the answer is 5.) 10^5</span>