Answer: A group of scientists wants to determine whether a relationship exists between alcohol consumption and certain types of cancer. To this end, scientists provide study participants with a questionnaire asking them how many alcoholic drinks they have per week and what diseases they have (if any). These scientists provide subjects with a similar questionnaire annually (for a decade). These scientists are performing an ASSOCIATION STUDY.
Explanation: Association study is observational study in different individuals to see if a particular behavioral pattern (such as alcohol consumption) can be associated with certain type of disease (such as cancer).
Information collected from the questionnaires distributed will be subjected to statistical analysis and conclusion(s) will be made.
Answer:
D. It allows some molecules to pass through but prevents others from doing so.
Explanation:
Plasma membrane or cell membrane is a selective permeable membrane which allows light molecules to pass and prevents heavy molecules.
Hope this helps ;)❤❤❤
Divergence of crustal plates. I could be wrong though and if I am my bad :))
The reason for this change is "Technological advances led to the discovery of single-celled organisms and increased our understanding of relationships between organisms"
<h3>Why bacteria and archaea should be classified into different kingdoms?</h3>
Archea and bacteria are both prokaryotic organisms ( organisms without defined organelles and nucleus) that share common features such as a similar morphology and similar ways to obtain food/energy. However, these organisms have important differences such as RNA type, they have a slightly different morphology and they live in different habitats.
<h3>Why did this change in classification occurred?</h3>
This change occurred due to technological advances. Indeed, the classification of organisms into 4 kingdoms occurred by the beginning of the 20th century when unicellular prokaryotic organisms had not been completely studied, and therefore it has not been determined this group included two sub-groups.
Learn more about organisms in: brainly.com/question/12825206
The answer for the above question is One chance in two.
<span>One chance in two because the parent can only bare a son or a daughter, therefore getting a daughter would give a probability of half and getting a son would give a probability of a half. These are the only possible outcomes getting a daughter or a son. </span>
