Surface tension is the property of water which allows for some lightweight insects to walk on top of a pond and not fall in. The molecules of water are held together by cohesive forces. The molecules of water present below the surface experience this cohesive force from all the directions, whereas the water molecules present on the surface experience a downward pull, as the force is not balanced. This leads to the concaving of the water surface inside a small tube.
The circulatory system and respiratory system are protected by your skin, muscles, and ribs.
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.
Cell controls on division contact with other cells once DNA (cell directions) is copied, cell divides sequence of steps
Answer:Cells are the basic building blocks of all living things. ... Cells also contain the body's hereditary material and can make copies of themselves. Cells have many parts, each with a different function. Some of these parts, called organelles, are specialized structures that perform certain tasks within the cell.
Explanation:look it up
