Most male fin and blue whales sing at around 17 to 18 hertz, which is too deep for humans to hear, but the 'lonely' whale communicates at 52 hertz. When more recordings were released in the nineties, Dr Watkins studied the 52 hertz whale more closely.
The average person needs to absorb just a small amount of iron each day to stay healthy (around 1 mg for adult males and 1.5 mg for menstruating females). To achieve this, however, we need to consume several times that amount. This is because our bodies absorb only a fraction of the iron contained in the foods we eat.
How many grams of iron do you need per day? How many fat grams per day should you eat if you consume 1000 calories per day?   around 30 grams of fat. make sure your fat comes from protein, rather than carbs. if you consume 1000 calories a day, you will lose one pound a week. 5 people found this useful.