Biology, 06.09.2021 01:00, Penelope9687
Hi, can someone pls help me with this question?
The offspring of a species of bird known as the European roller possess an effective defense mechanism. When they sense a threat by predators, the young birds vomit and cover themselves with a foul-smelling liquid. Which two systems work together to alert the young birds of danger and help produce the vomit?
(1) respiratory and excretory
(2) circulatory and immune
(3) nervous and digestive
(4) reproductive and muscular
Answers: 2
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Hi, can someone pls help me with this question?
The offspring of a species of bird known as the Eu...
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