Presence of a teratogen in the body of mother during pregnancy is responsible for mal growth of child or incomplete growth which may lead to abortion, still birth or even a defective child.
<h3><u>Explanation:</u></h3>
A teratogen is a substance that is known to cause <em>defects</em> in growth of child during the intrauterine growth period. Thalidomide was used as a morning sickness drug which relieved the vomiting nature of the would be mother. But the presence of thalidomide was responsible for less growth of limbs of the child. Alcohol in intrauterine life may cause Fetal Alcoholic Syndrome which damages the fetus' sense organs and neural cord.
The presence of a teratogen during the 1st trimester is more serious than in last trimester because the main formation of different organs and systems take place in the 1st trimester and maturity takes place in third trimester.
Answer:
Sensitive questions will make the respondents cautious when answering the next question since they will still be thinking about it
Explanation:
The main aim of a survey is to collect or gather data that will increase knowledge in fields such as social research and Demography.
Thoughts, opinions and feelings are assessed.
To get credible data, the respondents have to be truthful and unbiased in answering the questions.
Therefore, asking sensitive questions will lead to the respondents being biased and less truthful on answering later questions.
Answer:
Validity refers to the degree to which a method assesses what it claims or intends to assess.
Explanation:
<span>The troposphere is the only layer that has ozone</span>
Question: "Water is a product of the reduction phase of the Calvin Cycle. How many water molecules are produced?"
Answer: "Six water molecules are formed during the reduction phase of the Calvin Cycle, creating water."
