Which of the following is an example of an artificial ecosystem?
The correct answer is A
I. 4x2 + 9x - 9 = 0
II. 4y2 - 19y + 12 = 0
I. 2y² - 3y – 14 = 0
II. 3x² - 7x + 4 = 0
I. 2x² - 9x + 10 = 0
II. 3y² + 11y + 6 = 0
I. 2x² - 15x + 27 = 0
II. 2y² - 13y + 20 = 0
I. x² + 3x – 154 = 0
II. y² + 5y – 126 = 0
I. p2+ 2p – 8 = 0 II. q2 – 5q + 6 = 0
I. 7x² + 27x + 18 = 0
II. 19y² - 27y + 8 = 0
I. 3y2+ 16y + 16 = 0
II. 2x2+ 19x + 45 = 0
I. 12y2 + 11y – 15 = 0
II. 8x2 – 6x – 5 = 0
I. 6x² - 49x + 99 = 0
II. 5y² + 17y + 14 = 0