Q: Which type of glaciers form several unique features through erosion, including cirques, aretes, and horns? Choices: - line glaciers - deep glaciers - icebergs - valley glaciers A:
valley glaciers

Q: What serves as a first responder to pathogenic threats that bypass natural physical and chemical barriers of the body? Choices: - cells immune system - super immune system - immense immune system - innate immune system A:
innate immune system

Q: The earliest animals were which kind of invertebrates? Choices: - insects - mammals - dinosaurs - aquatic A:
aquatic