Answer:
3. D
4. Cosmopolitan
7.Is a port city in France been a crossroad of immigration and trade
Explanation:
By 600 C.E., the classical empires of China, India and Rome had all crashed. ... in central Asia coincided with the peak of Silk Road trade between 600 and 1450 C.E.. ... However, the rapid spread of Islam across north Africa and the ... C. During this period (600-1450 C.E.) interregional trade in luxury goods
Answer:
a) questionnaires
b) attitudes of student who had and who hadn't taken the course
c) difference in age group of students among whom questionnaire were distributed in both the groups.
d) restrict the age group in both the experimental groups.
Explanation:
The complete quetion is:
An investigator was interested in studying the effect of taking a course in child development upon attitudes toward childrearing. At the end of the semester, the researcher distributed a questionnaire to students who had taken the child development course. Questionnaires were also given to an equal number of students who had not taken the course. The students who had taken the child development course had different attitudes from the students who had not taken the course (cg., they had more positive response about having large families).
a) Identify the independent variable
b) Identify the dependent variable
c) identify confounding variable
d) propose a method to unconfound the experiment
a) questionnaires
b) attitudes of student who had and who hadn't taken the course
c) difference in age group of students among whom questionnaire were distributed in both the groups can lead to different understanding of questionnnaire and so affect the response towards the questions.
d) restrict the age group in both the experimental groups.
Confounding variables are variables that effect both the dependent and independent variable
The corpus luteum in a non- pregnant woman usually lasts about 10 days after the egg leaves the ovary.
Corpus luteum is inside the ovaries and is shaped like a tiny sac that can hold a developing egg. It is made of two main type of cells, that is, follicuar theca cells and follicuar granulosa cell. A human hormone called human chorionic gonadotrophic [HCG] spurs these cells to make progesterone.
When the egg escapes the dominant follicle during ovulation, the sac breaks. If the egg doesn't get fertilized, corpus luteum will start to break down around 10 days after the egg leaves the ovary. Without the progesterone, your uterus won't go through the changes that support pregnancy and you will shed the lining during periods.
Learn more about Corpus Luteum here:
brainly.com/question/28162903
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Answer:
build song communities is the correct answer
