From given premises, we cannot definitively conclude about birds being mammals as 'some animals are mammals' doesn't specify which animals.

Circular arrangement: P at top, Q opposite (bottom). R right of P. S between Q and R. T left of Q. U must be immediate left of P.

M(1)-M, A(2)-H, T(3)-E, H(4)-A, E(5)-T, M(6)-A, A(7)-T, T(8)-I, I(9)-C, C(10)-S. Letters at positions 1,6,8,9 remain same after analysis. Count=4.

Odd positions = 1, 3, 5, 7 (4 positions). All green boxes are at odd positions. Therefore, 4 green boxes.

E is parent of D. D is sibling of A. A is parent of B. B is parent of C. E→D→A→B→C = 3 generations apart.

H(consonant)→A(previous vowel), E(vowel)→F(next consonant, but rule changes), L(consonant)→U, L→U, O(vowel)→P. Corrected: ALUUA.

Some flowers fade quickly, and roses are flowers. Therefore, some roses may fade quickly (valid conclusion).

Woman's son's mother = Woman. Woman's mother's husband = Woman's father. No wait: son's mother = woman. Woman's husband = husband.

Dogs are mammals. Some pets are birds. This implies remaining pets could be mammals. Therefore, some pets are mammals (valid).

North=0°, East=90°, South=180°, West=270°. Southwest is between South and West = 225° (clockwise from North).