D - an increase in tree cover in the tundra.
Answer:
The correct answer is -Biosocial perspective.
Explanation:
In the last few years, the research and thinking on biosocial perspectives on the family come in light. The biosocial perspective on the family is characterized by concepts or laws related to various psychological factors to evolution, genetics, and physiology.
Three major developments that are contributed in this perspective are findings of proximate biological interplay, advances in evolutionary thinking and alteration in the field of studies related t the family.
Thus, the correct answer is - the biosocial perspective.
As you move down a group, atomic radius increases
