Answer:
placebo control group
Explanation:
In order to determine that a drug has any effect in the body participants of a study are divided into two groups a group which actually receives the treatment and the other group receives a fake treatment. The participants are unaware of which group they belong to.
The fake treatment group is called the placebo control group. If the drug is actually effective then the placebo control group should not shoe the same effects that the treatment group is showing.
Here, the capsule received by group 2 looks like the capsule with the Ginkgo Biloba herb. The participants of group 2 should not show an increased blood flow to the brain. The participants of group 1 should show an increased blood flow to the brain. This would prove that the Ginkgo Biloba increases blood flow to the brain.
Answer:
The correct answer is: <u>Oldowan tools</u>
Explanation:
The <u>Oldowan tools </u>are the oldest recognizable tools preserved in the archaeological records. The oldest Oldowan tools is about 2.6 million years old and was found in Gona, Ethiopia. These tools were made simply by chipping off few flakes of a stone by using another stone.
Around 1.8 million years ago, the early <u>Homo were present in Europe, as their fossils were discovered along with the Oldowan tools in Dmanisi, Georgia.</u>
<u>Therefore, the early Homo left Africa and carried the Oldowan tools to Dmanisi, Georgia.</u>
I believe the answer is: A task analysis
To measure a person's accomplishment to finish a task, we need to include several factors as a consideration for the analysis.
These factors would include things such as job description, task frequency, expected deadline, Complexity, team allocation, and external factors
Answer:
Many scholars believe that the collapse of the Indus Valley Civilization was caused by climate change. ... By 1800 BCE, the Indus Valley climate grew cooler and drier, and a tectonic event may have diverted or disrupted river systems, which were the lifelines of the Indus Valley Civilization.
Answer: b) achievement test.
Explanation:
Achievement test is the assessment in which learned knowledge, skill and information is evaluated through help of test.This determines the development of skill in a person.
According to the question,Gretchen is taking achievement test to assess and evaluate her learned knowledge and skill in field of data operations.
Other options are incorrect because judgement test, critical thinking assessment,aptitude and psychometric test does not defined learned knowledge ability.Thus, the correct option is option(b).
