Answer:
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Explanation:
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<em>A food web is a more realistic way of portraying an ecosystem than a food chain because food chains imply that organisms only eat one type of organism which is rarely true. In a food chain predators occupy higher levels than their prey. Food webs are more complicated diagrams that are not purely linear.</em>
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The central nervous system is made up of the brain and spinal cord.
The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
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D. living things in the biosphere.
The atmosphere contains all the air that plants and animals both use to survive so if there was a change within it, it would affect all living creatures in the biosphere.
Answer:
Hepatic portal vein
Explanation:
Hepatic portal vein is a blood vessel that transports blood from the gastrointestinal tract (digestive tract) and spleen to the liver. This blood vessel delivers deoxygenated blood to the liver from the small intestine. This blood transported from the digestive tract to the livers contains toxins and nutrients which have been extracted from food that have been digested.
The hepatic portal vein is about 8 cm in length in average adult and located close to the abdomen at the right upper quadrant.
