Natural selection is the right answer hope this helps.
Answer:
<em>6</em><em> </em><em>minutes</em>
EXPLANATION:
The brain can survive for up to about six minutes after the heart stops. The reason to learn cardiopulmonary resuscitation (CPR) is that if CPR is started within six minutes of cardiac arrest, the brain may survive the lack of oxygen. After about six minutes without CPR, however, the brain begins to die.
I think the best answer from the choices would be the first option. Icebergs float in the ocean since i<span>cebergs are composed of freshwater and freshwater is less dense then salt water. The ocean contains salts which contributes to its density which most likely would be higher with that of an iceberg.</span>
The right answer is TRUE.
Achieving longevity in good health (reaching old age in good physical and mental health) is essential to the favourable development of our society. That's why it's important to promote healthy habits throughout your life to prevent or delay the onset of chronic disease when you reach old age.
mercury and venues are the only one without moons