A northbound train left at 9 a. m. Two hours later, a southbound train left the station. At four o'clock the two trains were 429 miles apart. Find the rate of each train if the northbound train traveled 15 miles per hour faster than the southbound train.

R=58 MPH FOR 4 HOURS FOR THE SOUTH BOUND TRAIN

THUS THE NORTH BOUND TRAIN WAS TRAVELING

58-15=43 MPH FOR 6 HOURS

PROOF

490=43*6+58*4

490=258+232

490=490

Step-by-step explanation:

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 probability that a bird is green (.30) is true

step-by-step explanation: