Q: The human skeleton is an endoskeleton that consists of 206 bones in the adult. it has five main functions: providing support to the body, storing minerals and lipids, producing blood cells, protecting internal organs, and this? Choices: - Forward movement - enough movement - more movement - allowing movement A:
allowing movement

Q: Which system consists of organs that break down food and absorb nutrients such as glucose? Choices: - circulatory system - excretory system - urinary system - digestive system A:
digestive system

Q: Rising air currents carry water vapor into what? Choices: - stratosphere - ionosphere - troposphere - atmosphere A:
atmosphere

Q: What happens to the core of a star when it begins to run low on hydrogen? Choices: - it expands - it disappears - it explodes - it contracts A:
it contracts