What makes climate change research valid? A. Many studies point to the same conclusions.
B. Many studies are made up.
C. Many studies fail to come to a conclusion.
O D. Many studies are based on opinions.

A. Many studies point to the same conclusions

Explanation:

In order for something to be valid you will would need multiple studies to show the same conclusion. It shows that the research is valid.

preservation because he preserves part of the land and preserves means save

explanation:

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.