Answer: The frequency at which new species emerge and are lost over evolutionary time is established by the rates of speciation and extinction.
This question is incomplete, here´s the complete question.
After teaching a group of students about the socioeconomic gradient in health, the instructor determines that the students understand the concept when they state that the relationship between social class and health is which of the following?
A)Direct
B)Inverse
C)Positive
D)Unequal
Answer: B) Inverse
Explanation:
The socioeconomic gradient indicates that there´s an inverse relationship between social class and health, meaning that health status tends to relate to the social gradient.
This means that people higher incomes, in opposition to people from a lower class, usually have greater health, which is verified by a lower mortality and disease rate, as well as a higher life expectancy.
Organ Systems. When a group of organs work together to carry out a body function this is the what it is called.
Integumentary system. This is the external covering of our body, our skin.
Skeletal System.
Muscular System.
Nervous System.
Endocrine System.
Cardiovascular System.
Lymphatic System.
