D OUT W ch one does not belong, write this
only on the entry coupon.
+
BADGER
BAT
DUCK
HEDGEHOG
PARROT
Bat

47. a student is frightened by a loud noise, which results in a hormone being released into the blood. the hormone causes the student's heart to beat rapidly. the two systems that work together to cause this reaction are the endo- crine system that secretes the hormone and the (1) nervous system (3) excretory system (2) reproductive system (4) digestive system

These two elements threaten ecosystem biodiversity.

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