Q: A crater can usually be found on the top of what kind of volcanoes? Choices: - Shield - Dome - Compound - composite A:
composite

Q: The two main types of phagocytic cells in the mammalian body are neutrophils and what other? Choices: - histones - leukocytes - eukaryotes - macrophages A:
macrophages

Q: What process refers to the conversion of atmospheric nitrogen to ammonia? Choices: - biological nutrient fixation - biological ammonia fixation - biological respiratory fixation - biological nitrogen fixation A:
biological nitrogen fixation