Answer:
Epicenter is the point on Earth's surface directly above the focal point of the earth quake.
Actually it's above the hypocenter.
Seismograph: Is an instrument that records the seismic waves caused by action of earth quake effect.
Gradual changes in the frequency of diseases over long periods are known as SECULAR TIME TRENDS. For example, the rate of mortality in USA due to coronary heart diseases over a period of time. Onset of puberty in girls is also a secular time trend.
Secular time trend is also referred as Secular Variation and Secular Drift.
The form of choose is sllt
I don’t know any famous ecologists but I know their knowledge impacts us today because we wouldn’t know that much about how and why life forms interact with their habitats
