What is the standard form of this number?
(721) + (4 +0.01) + (2+0,001)
7,002
7.042
7402
7420

the answer is; biodiversity resulting from few ancestors

adaptive radiation occurs when a population is subjected to a large natural environment with spatial ecological variations. the parts of the population in the different ecologies begin to adapt to their local environments. due to non-random mating across the large populations, this causes the different populations from the large population to speciate within their local environments. they, therefore, diverge to different species sharing a common ancestor.  

the answer is 3/2 and for decimal: 1.5

hope i

-lavira: )

sorry i really don't know what tiles and steps you are referring to

step-by-step explanation: