Milankovitch cycles is the correct term for changes in the elliptical shape of Earth’s orbit every 100,000 years.
Milankovitch cycles are the various influences of the earth's movements on its climate over thousands of years. There are three dominant Milankovitch cycles which are eccentricity, axial tilt, and precession, that combines to affect the location of solar energy around the earth, seasonality, and eventually influence climatic patterns.
Florida State University has a large collection of ice cores taken from the Antarctic. By this information scientists learns about the <u>history of Earth’s climate</u>
Answer: Option A
<u>Explanation:</u>
Ice cores which are taken from the Antarctic help the scientists to study the history of Earth's climate. With the help of these ice cores scientists can study the climate of earth as far back as 800,000 years.
This can be studied by drilling core samples from deep underneath the ice sheets of Antarctic. The records of ice core can be used to reconstruct ocean volume, precipitation, solar variability, volcanic eruptions, atmospheric dust and many other things.
<span>cultivating plants using primitive tools</span>
Manufacturing industries engage in production of goods (finished products) that have value in the marketplace service industries include those industries that do not produce goods and instead provide services