19. The immediate cause of a heart attack is... 1 blood pressure drops in the veins
2 layers of fatty deposits build up slowly
an artery in the brain becomes blocked by
a clot
4 vessels that bring blood to the heart get
blocked

Which shows a correct order of steps in the scientific method? develop a hypothesis, analyze data, draw conclusions, make observations develop a hypothesis, analyze data, make observations, draw conclusions make observations, develop a hypothesis, analyze data, draw conclusions make observations, draw conclusions, develop a hypothesis, analyze data.

To avoid food poisoning, perishable items should not be stored in the refrigerator for more than days.

Which describes the effect of prolonged stress on blood pressure? it causes blood pressure to decrease. it has little or no effect on blood pressure. it causes the heart to pump with more force. it causes blood pressure to increase.