Question: Q: What are the largest phylum in the animal kingdom? Choices: - crustaceans - cephalopods - mammals - arthropods A:
Answer: arthropods

Question: Q: What technology do scientists use to create models? Choices: - calculators - patterns - microscopes - computers A:
Answer: computers

Question: Q: Echinoderms have a unique system for gas exchange, nutrient circulation, and locomotion called the water vascular system. the system consists of a central ring canal and radial canals extending along each arm. water circulates through these structures allowing for gas, nutrient, and this? Choices: - water evaporation - nerve exchange - cell exchange - waste exchange A:
Answer:
waste exchange