Earlier theories (e.g. by Alfred Wegener and Alexander du Toit) of continental drift were that continents ploughed through the sea. The idea that the seafloor itself moves (and carries the continents with it) as it expands from a central axis was proposed by Harry Hess from Princeton University in the 1960s.ince then, it has been shown that the motion of the continents is linked to seafloor spreading. In the 1960s, the past record of geomagnetic reversals was noticed by observing the magnetic stripe anomalies on the ocean floor.
To figure out exactly how many calories are needed to maintain your current weight, all it takes is a very simple 4 step experiment: 1  Consistently eat the same number of calories each day for a few weeks, and keep your activity level fairly consistent as well.f it doesnât, then just adjust your daily calorie intake up or down in small 250 calorie increments until it does. When you reach the point where you are maintaining your weight from week to week, youâre done. Thatâs how many calories you need to eat per day to maintain your current weight.
How Many Calories Should I Be Eating To Maintain: Continue eating your BMR calorie intake. How Many Calories Should I Eat To Gain Weight: For weight gain, take your BMR number and add anywhere from 250 to 300 calories. How Many Calories Should I Eat In A Day? The Harris Benedict Equation. The calorie calculator above does all the math for you to figure out how many calories you should eat per day.