Which best describes why water has relatively high surface tension? Water molecules have a bent shape, which prevents them from packing together.
Water molecules are attracted to each other due to hydrogen bonding.
Water molecules cannot bond with any other compounds.
Water molecules contain oxygen atoms, which cannot break into smaller atoms.

i'd say that the moon rock is about 2.2 billion years old.

the answer to you question is   jet streams

a- all cells come from pre-existing cells

you know that this symptom is misleading and quite often is related to: heart attack

a heart attack is a condition that occurs when the blood flow that transports oxygen to the heart muscle is damaged or cut off completely. the coronary arteries that supply the heart muscle with blood flow can be blocked by the accumulation of plaque. also, when the plaque within the heart artery breaks, it creates blood clot that can also hinder the blood flow. men that are over 45years of age and women that are over 55years of age are at risk of having a heart attack. the symptoms of a heart attack include chest discomfort, chest pain, coughing, and shortness of breath.