Models can be conceptual, graphical or mathematical as they are used in science. It allows one to break down a concept into simpler terms with a visual component. A limitation of models in science is that they are usually simplified versions of the real situation or concept.
<em>Twenty Four Christmas trees</em> can be seen on the <em>White House</em> public tour route in 2013.
Over 450 repurposed books were used as part of the holiday as part of the holiday decorations in 2013 during <em>Christmas</em> time.
Answer: The object will continue moving north because the two forces are equal and will cancel each other out.
Answer:
Petrified Forest National Park
Explanation:
hoped it helped!
Answer: This is a "CONTROLLED PLACEBO EXPERIMENT".
Explanation: A controlled placebo experiment is a type of research method that is used to check the effectiveness of a drug in a patient. This is done by selecting a sample group, then randomly divide the two group into a placebo group ( this are the group that will receive the drug treatment ) and the controlled group( these are the group that will receive a coloured mixture that looks like the drug, but does not have any effect). Without the groups knowledge about the real drugs and the coloured mixture, but are followed up and tested.
This is a controlled placebo experiment, because 400 student has been choosed as the sample, and are divided into a placebo group and a controlled group, to check the effectiveness of a drug on their memory.
