Answer:
i know this is off topic, but what language is that?
Explanation:
just curious, sorry
The correct answer is Three germ layers. The feature, three germ layers, is only shown by higher invertebrates, as compared to lower invertebrates. The formation of the three germ layers is caused by the morphogenetic movement called Gastrulation.
Answer:
Rubber on steel and Rubber on dry concrete
Explanation:
Friction is the force of resistance on the solid motion surfaces.
Coefficient of The ratio of frictional force between two body and the forces that brings them together. It depends on the temperature, velocity of the object involved.
Rubber is said to exhibit a high coefficient of friction with other surface ranging from 1 to 2 while Dry surface material yield between 0.3 to 0.6. When friction is greater than 1 it means the force that is needed to slide or move an object on the surface is greater than the force that exist on the surface of the object.
Answer:
<em><u>A. Neither the subjects nor the researchers can bias the results.</u></em>
Explanation:
As described, a double- blind study is one in which the researcher and his study does not know the person receiving the actual treatment.
Researchers can be bias in their studies as they seek to establish and fine tune results in the way the best favors them. A double-blind study helps to bridge this gap to prevent bias that might be introduced into an experimental set up or while interpreting results.
