A boy scout troop is selling Christmas trees at a local tree lot. In the morning, they sold 16 Douglas Fir trees and 9 Noble Fir trees, earning a total of $977. In the afternoon, they sold 19 Douglas Fir trees and 9 Noble Fir trees, earning a total of $1,064. How much does each type of tree cost?

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.  

idk

step-by-step explanation:

d. 145*2 is 290 than the total angle is 360 then minus 290 then divide by two