Please check my answers thank you.

--------------- is the ratio of infant deaths to live births in a given year

1. Sudden Infant Death Syndrome
Infant mortality X
Infant life expectancy
Infant morbidity

2. T/F Sedentary lifestyles and poor food choices have a direct impact on chronic diseases for individuals over 45. True

3.T /F Infectious diseases were once the leading causes of death True

4. T/F Cancer and Heart disease are the leading causes of death in the U.S. True

These all look correct to me.

1. The correct answer is "Infant mortality". You got it right!

To determine the correct answer, you can look at the options provided for the definition of a term. In this case, we are looking for the term that represents the ratio of infant deaths to live births in a given year. By process of elimination, we can rule out options like "Sudden Infant Death Syndrome" since it refers to a specific cause of infant death, and "Infant life expectancy" and "Infant morbidity" as they do not represent the given ratio. Thus, the correct answer is "Infant mortality".

2. The correct answer is "True". You got it right!

To determine the correctness of the statement, we need to understand the question and analyze the options. Sedentary lifestyles and poor food choices are known risk factors for chronic diseases, and as a person grows older, these risk factors can have a direct impact on their health. Therefore, it is true that sedentary lifestyles and poor food choices have a direct impact on chronic diseases for individuals over 45.

3. The correct answer is "True". You got it right!

To determine the correctness of the statement, we can refer to historical knowledge or conduct research. In the past, infectious diseases like smallpox, tuberculosis, and influenza were leading causes of death before advancements in medical knowledge and healthcare. Therefore, it is true that infectious diseases were once the leading causes of death.

4. The correct answer is "True". You got it right!

To determine the correctness of the statement, we can refer to statistical data or reputable sources. Cancer and heart disease have consistently been the leading causes of death in the United States for many years. This information is often reported by health organizations and governmental agencies. Therefore, it is true that cancer and heart disease are the leading causes of death in the U.S.