Definition - What does Positive Displacement Pump mean? Positive Displacement Pump is a type of pump used to displace or force oil and petroleum products into pipelines or into various equipment installed in refineries.
A brain looks like a walnut because our minds are constantly making comparisons and finding similarities to help us understand the world around us. Here's an activity that can help you see more such things. Try to find faces.
Walnuts nutrition facts. Walnuts are edible kernels obtained from tree belonging to the Juglandaceae family, in the genus, Juglan. The nuts have been revered since ancient times as symbol of intellectuality, since their bi-lobed kernels have convoluted surface inside the shell resembling as that of the human brain!