the water, a fish swims back up 30 feet. Use a number line to help you create an equation that shows the new location of the fish in relation to the water's surface . 0 Interpret the sum in the context of the problem. OA. The equation is - 50 + (- 30) = - 80 . The fish is 80 feet below the water's surface B. The equation is - 50 + 30 = - 20 . The fish is 20 feet below the water's surface C. The equation is - 50 + 30 = - 80 . The fish is 80 feet below the water's surface . D. The equation is - 50 + (- 30) = - 20 . The fish is 20 feet below the water's surface

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.  

answer:   28.56 feet (approx)

step-by-step explanation:

since, triangle abc has measure of angle c equal to 55 degrees, measure of angle abc equal to 90 degrees, and length of bc equal to 20 feet.

we have to find out the measurement of segment ab.

therefore, tan 55° =

but bc = 20 feet.

⇒ tan 55 ° =  

⇒ ab = 20 × tan 55 °

⇒ ab = 20 × 1.42814800674

⇒ ab = 28.5629601348   ≈ 28.56 feet

b. hannah is playing with her cousin at