Select the elements which are considered trace elements in the human body. oxygen fluorine nitrogen iodine carbon

If john has 100 family members 50%of them have been a car accident. 30% have had cancer how many of them are healthy

If mary has stopped her resistance training for three weeks, once she continues, she should work out harder to get back in shape keep her workout the same as before her break reduce the weight during the workout session reduce the rest times between sets

Witch form of birth control could people use without. altering hormonal systems or blocking sperm from fertilizing an egg