4) digestive and circulatory, because the bladder is part of the digestive system. The circulatory system carries blood around the body using blood vessels.
The most appropriate statement that is explaining the effect and cause during muscle contraction is. “The release of calcium ions causes myosin and actin to attach to each other.” The activation of muscles helps in the generation of muscles that send out the signals to the neurons.
Answer:
B.) an earthquake
Explanation:
earthquake, volcanoes, tsunamis and landslides are naturally occurring events that can rapidly change earth's surface
C . on or in the ocean bottom
