Answer:
Crayon.
Explanation:
A crayon is known to be a kind of stick like pencil, but made of called wax, and it is useful for painting.
It is known that that the first crayon which looks like the modern crayon was made in Europe. And it was initially or originally made then out of the mixture of charcoal and oil. But now, the charcoal has since been replaced by various pigment and the oil been replaced by wax. This because the wax provides a better and stronger writing stick and it is easier to work with.
It should be noted, that crayon is used for writing and drawing, and its invention can be dated back to 18th century.
Dangerous, rocky, fast moving water is called cataract. C<span>ataracts are sections where the river tumbles over rocks, and can be very dangerous. A well known cataract can be found in the Nile River. </span>
Let me find wat it is and then i will get it back too u
Answer:
practice effects
Explanation:
Based on the information provided within the question with regards to Leigh's experiment it can be said that her biggest concern should be practice effects. This term refers to the effects or changes that can occur when repeating the same experiment various times with the same participants. Which is what Leigh is doing, as she is only changing one variable but repeating the same experiment.
If you have any more questions feel free to ask away at Brainly.
Answer:
Between-Subjects Design
Explanation:
The advertisement was shown to two different groups of people because Between-Subjects Design was used. This type of design determines that a research will bring together two groups of people, where each person, of each group, will only be exposed to one treatment of the experiment, that is, to a tested element, having not counted on the other treatment of the experiment. This allows the research to be able to compare the results of each treatment in different people.
