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<span>Trophic level is level in the movement of energy through an ecosystem. It describes the organism's feeding status in an ecosystem.
</span>An organism that feeds at several trophic levels is an example of a carnivore (<span>animal that gets food from killing and eating other animals.).</span>
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.
Answer:
Collections of nerve cell bodies in the peripheral nervous system are called <u>ganglia.</u>
Explanation:
Ganglia are structures enclosed in a tissue sheath, which contains cell bodies of neurons. They also contain dendrites that make synaptic connections between neurons, transporting electrical impulses, connecting the brain with specific organs. They are part of the peripheral nervous and are responsible for connecting the peripheral nervous system with the central nervous system, both in an efferent sense (from the central nervous system to the sensory organs), and afferent (from the sensory organs to the central nervous system).
Your heart pumps blood so it can circulate to your tissues as well as get oxygen from your lungs, if your heart can’t pump blood well i.e. heart attack you can feel short of breath
