Glassy igneous rocks (i.e. obsidian) are cooled very rapidly.
Child proof means that its child-approved, meaning that its made safe for children.
Positive ions from a base and negative ions from an acid form a it helps for example ypu have positive ions right well take my smart advice well the positive ions and the negative ions they combine together to make sulphour
The type of muscle that is responsible for maintain posture is VOLUNTARY. The correct option is B. Skeletal muscles are the ones who control posture and movement and they are voluntary in nature, that is, they are under the conscious control of man. The muscles that are responsible for maintain posture are: spinal, pelvic and abdominal muscles, hip muscles, lower leg muscles and shoulder and neck muscles.
