Adrian is a researcher who works in a lab. He decides to perform an experiment to understand the side effects and benefits of drinking tea. He puts forth some questions about the experiment. They include, Do people who drink tea have a higher risk of brain illnesses than non-tea drinkers? and Do people who drink tea stay more alert than non-tea drinkers? He also proposes a question, Are people who drink tea happier than people who don’t drink tea?

Adrian is performing a research based on co-relational research design which allows him to use various variables and compare the relationships and patterns existing between them.

Explanation:

Co-relational studies include case-control studies and observational studies.

Adrian is researching about the benefits and side effects of drinking tea. To support his theory, he collects evidence based on questionnaires provided to people. He questions about the alertness and happiness level after drinking tea and about risks of getting brain illness with drinking tea. He will co-relate all the results obtained and will conclude his research about the benefits and side effects of drinking tea.  

its been noted for the past decade or so that there is some (approximately 5% to 7%) shrinkage in the brains of people who have schizophrenia, most notably in the gray matter, which is an important part structures in the brain’s amygdala, hippocampus and parahippocampus, which are all involved in memory storage and retrieval memory storage and retrieval.

explanation:

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the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.