Endoplasmic reticulum
The series of canals that are made up of membranes are called the endoplasmic reticulum. It plays a key role in protein and lipid synthesis within cells.
The Egyptians made special canals called irrigation canals. They were used to carry water from place to place.
Henry Clay represented Kentucky and made efforts to divert budget to roads and canals.
Hyphae are made of membranes and cytoplasm.
Irrigation
These are generically called "canals".
Canals are man made. Rivers are natural.
Ancient peoples made canals to get water into fields and areas. Traces of ancient canals dating back thousands of years can be found around the world.
A canal is a man-made waterway for travel or for draining or watering land. Canals are also made by modifying rivers, but then usually called "navigations".
The Navigation Acts effected the construction of canals because they made canals cheaper to build.
it was man made
canals are man made waterways, rivers are natural waterways