Plants that live in hot, dry climates have evolved mechanisms to conserve limited water sup- plies. one example is the closing of leaf openings by guard cells during the day to decrease water loss from their leaves. this detection of and response to an environmental stimulus is an example of
(1)a feedback mechanism
(2)a genetic mutation
(3)an organ malfunction
(4)an allergic reaction

the glands which are associated with each description is given below:

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.

density and pressure