Answer:
The placenta is the temporary association of fetus and maternal tissue. It is meant for nutrition and transport of different substances.
Explanation:
The placenta is a temporary association of fetal and maternal tissues. The placenta is formed from the trophoblast of the blastula. These trophoblasts form chorionic villi which later forms the placenta. The chorion and allantois also take part in the formation of the placenta. Hence, the human placenta is known as the chorioallantoic placenta. The process of formation of the placenta is known as placentation.
The placenta has several functions but the major function is to provide nutrition to the fetus. The developing fetus gets nutrition from the mother's body by the placenta. The placenta provided with blood vessels which help in the transportation of different substances. It also helps in gas exchange between the mother and baby. Thus it plays a vital role in fetal respiration. The metabolic wastes diffuse through the placenta. Placenta also stores fat, glycogen, which participates in protein metabolism.
Answer: Option A
Explanation:
ESTs are Expressed sequence tags, which are the segments of mRNA sequences that is derived through the single sequence reactions performed on the clones from cDNA libraries which were randomly selected.
This is possible by the help of bioinformatics that this much of data is available nowadays for study and research purpose.
Till date we have 45 million expressed sequence tags obtained from over 1400 species or can be said as eukaryotic species.
Public opinion is less likely to affect fiscal policy making.
There are a number of variables that affect the formulation of a country's fiscal policies, the most important being domestic demand and economic growth.
Public opinion is therefore not a relevant factor that affects the formulation of these policies, it affects more social and environmental policies, for example.
For a better understanding of fiscal policy, we must understand the concept of taxation.
Taxation is a financial obligation on individuals and organizations, whose main objective is to improve the economy and public services so that there is a fairer and more equal society.
Some examples of taxes:
- Income tax
- payroll tax
- sales tax
Therefore, public opinion is more likely to affect the formulation of social and environmental policies than fiscal policies. Because it is capable of instituting new ideas and social awareness that can directly affect legislation.
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B a molecule made of many small molecules
Answer:
Air temperature
Explanation:
Air temperature is being described by Jade according the properties highlighted.
The degree of hotness or coldness of a body is known as its temperature.
- As you go higher it becomes cooler. The surface causes the warming of the air around.
- With height, the surface is distant from the body of air.
- On summer days, air temperature is higher due to more insolation.
- Weather maps gives a good description of air temperature from places to places.