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The first species or community to invade the bare area during succession is called pioneer species or pioneer community. In case of succession on land (terrestrial) lichens are the pioneer species.
Statements: I < W = T ≤ H = C ≤ Y, Y > N ≥ E
Conclusions:
I. Y ≥ W
II. H > E
III. N < T
Statements:
P ≤ Q < R > K; R < S > T; T < U < V
Conclusions:
I). P < S
II). P ≥ S
...Statement: B > C = J; B > S > E; B < N
Conclusion: I. E < C II. J ≤ E
Statement: I ≤ S, S < X, X = F, F ≤ K
Conclusion: I. K > I II. I < X
Statements: Z ≤ B = G; I > U; I < W < G; Z ≤ X < S
Conclusions:
I. Z < W
II. U < B
III. X > I
Statements: Z ≤ O = Q < P; A = X > M = Y ≥ P
Conclusions:
I. A > O
II. Z < X
III. Q ≤ M
Statements: P = Q = R > S > T > Z; U > R < V < W > X
Conclusions:
I. W > Z
II. R < W
III. R < X
Statements : T ≥ W > X; Q = J < X; Q < O ≥ D
Conclusions :
I. J < W
II. O > W
III. D > J
...Statements : C ≤ A < B ≤ D; E < B > F > G; I < H < G
Conclusions :
I. B > I
II. D > H
III. H < B
Which of the following symbols should replace (1) and (2), respectively in the given expression in order to make the expression X < H definitely true?
