Answer:
The process of producing food, feed, fiber and many other desired products by the cultivation of certain plants and raising of domestic animals. Agriculture was the key development in the rise of sedentary human civilization.
Explanation:
Answer:
The answer is Natural selection
Answer: Option 'C' is correct.
Explanation:
Since we have given that
Area of triangle LMN = 18 ft²
Area of triangle FGH = 24 ft²
Since Δ LMN and ΔFGH is equivalent triangles.
As we know the theorem which states that ratio of areas of equivalent triangles is equal to square of ratio of corresponding sides.
So, it becomes,

Hence, Option 'C' is correct.
The current maternal blood-screening test is also known as the triple screen test because of the testing of the three substances in the blood of a pregnant woman. These three tested components are the hCG (Human Chorionic Gonadotropin), AFP (Alpha-feto protein), and the estriol.
For the purpose of this triple screen test, the blood is drawn for the expectant mother and then this drawn blood is tested for the listed three components.
Hence, the correct answer is 'it tests for three substances in the maternal blood'.