We know that vinyl chloride is a carcinogen. parents fear that their children will get cancer from playing with toys made from pvc. do you agree or disagree?

Energy derived from hot rocks and fluids beneath the earth’s surface is

Which blood cell spend most of their time in the lymphatic system?

Which of these is most likely to happen if parallax measurements of star distances are taken after a gap of six months? the results would be accurate the results would be inconsistent the results would not be valid the results would not be repeated