Select all the equations that can be used to answer the question: "How many rhombuses are in a trapezoid?" Group of answer choices

2/3 ÷ ? = 1

1 x 2/3 = ?

1 ÷ 2/3 = ?

? x 2/3 = 1

? ÷ 2/3 = 1

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.  

a_n = a_1 + (n - 1)d

the first term is 6.

the common difference d = ?

when you find d, replace n with 7 and d with the common difference to find your answer.