A Structure Called a Placenta, Which Nourishes the Developing Embryo

question 212

Short Answer

A structure called a placenta, which nourishes the developing embryo, evolved in _______.

---

Definitions:

Wealth Effect

The change in spending that accompanies a change in perceived wealth, usually through market price changes of assets like homes or investments.

Aggregate Demand

The complete summon for goods and services in an economy, quantified at a particular level of overall price throughout a definite period.

Aggregate Supply

The total supply of goods and services that firms in an economy plan on selling during a specific time period, which can be influenced by factors like production technology and labor availability.

Increased Immigration

A scenario where the number of people entering a country to live permanently exceeds the number leaving, affecting various aspects of the economy, including the labor market.