The presence of earthworms ____.
A) increases free nitrogen in the environment
B) reduces the presence of parasitic flatworms
C) results in sandier soil
D) increases crop yields
E) decreases native biodiversity
Correct Answer:
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Q11: The mollusks with the largest brain and
Q12: Which animals have a gut with two
Q13: Which group is characterized by radially symmetrical
Q14: The smallest adult chelicerates are _.
A)horseshoe crabs
B)mites
C)scorpions
D)spiders
E)ticks
Q15: The only winged invertebrates are from which
Q17: The sea slugs (nudibranchs) may protect themselves
Q18: "Nerve net" describes the nervous system of
Q19: Four of the five answers are features
Q20: An animal with bilateral symmetry _.
A)has no
Q21: A flatworm moves nutrients and gases through
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