Answer:
bcz of moon waves and tides are caused this is a gravitational force called tidal force
D! all of the others are commonly used
Answer:
the birth rate is low and the population is declining. the chart is kind of hard to see
The cause of a tsunami is when there is an earthquake under the ocean/sea and and when it shakes the water moves rapidly and then when it hits land it destroys everything in its way and then people die because of this.