Answer:
We obtain carbon through cellular respiration and return by excretion through the nose
I guess the answer its option B
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Invented by Archimedes around 250 BC, a Block is a set of pulleys on an axle in a housing. When rope is run through a block or a series of blocks, the whole assembly is called a Tackle. The most common arrangement is to have one1 block attached to a fixed position and another block left to move with the load being pulled or lifted. The mechanical advantage of a block and tackle is equal to the number of time the same line is attached to or runs through the moving block. The pulley on the left does not have a block on the Bale. When you pull on the rope, you are pulling the full weight of the bail. The tackle on the right has 4 lines running through its pulleys. This would allow you to lift 20 pounds with only about 5 pounds of pressure on the hauling part of the line. While the block and tackle is still used today, it has been largely replaced with the electric winch.
The rope used in the 1800's would have been of natural fiber like we have in this exhibit. The rope around the bail is made of SISAL which comes from the leaves of the agave plant. Cotton rope is running in the blocks. Notice how soft it is compared to the SISAL fiber rope. Jute fiber twine, from the Corchorus plant, is used to tie the ends of the larger ropes. It is the same fiber woven to make burlap sacks. Natural fiber rope continued to be in widespread use until the 1950s when synthetic fibers, such as nylon, became popular.
An arrangement of receiving money, goods, or services now in exchange for the promise of payment later is called credit. With credit, a person can get a car, house, appliances, furniture, and much more. The correct answer is C.
Endocytosis is the process by which Bulky Molecules enter the cell.
Explanation:
- Endocytosis is the process by which eukaryotic cells take up large molecules into their cytoplasm.
- The large molecules that cannot enter the cell through protein channels of the plasma membrane are carried into the cell in membrane bound vessicles.
- The vessicles are formed by progressive invagination of the cell membrane and then pinching off after the molecule is trapped.
- Endocytosis has been classified as phagocytosis (cell eating) and pinnocytosis(cell drinking).
