Which of the following addition problems could be modeled by the algebra tiles shown below? Assume that no zero pairs have been removed yet. O(2x2 - 4x + 5) + (-5x2 + 2x - 3) 0 (-2x2 + 5x – 5) + (-x2 + 3x + 3) O(-x2 + 3x – 3) + (-2x2 + 3x + 5) O (x2 + 8x – 3) + (-2x2 – 2x +5).

1) is right

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.  

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation:

1260=3*6*7*10=3^2*2^2*7*5 perfect cude = 3^3*2^

step-by-step explanation: