A food web refers to the graphical or pictorial representation of the food consumption interconnections among living organisms in a particular ecosystem. The food web usually have a base, a middle section and a top section. The base of the food web is made up of plants, which are called the producers. Plants are able to make their own food and others in the web depend on them for food. The middle section is made up of primary consumers, which are those organisms that feed directly on plants while the top section is made up of secondary consumers, which are those that feed on primary consumers.
B .The membrane is what separates, and is the system boundary.<span />
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Cell is the basic , functional unit of life
An atom is the smallest unit of ordinary matter that forms a chemical element .
<span>•Central nervous system- the part of the nervous system that is made of two structures, the brain and the spinal cord. hope this helps!!
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A vein is a blood vessel that conducts blood toward the heart. Compared to arteries, veins are thin-walled vessels with large and irregular lumens.
<h3>Where are blood vessels found in your body?</h3>
- Blood is delivered to human tissues by arteries, which act as conduits or channels. Two tube-like closed systems comprised of the vessels start and stop at the heart. Blood is transported from the right ventricle to the lungs and back to the left atrium by one system, the pulmonary arteries.
- Your circulatory system is made up of blood vessels and heart vessels. About 60,000 miles of blood arteries make up your body.
- Blood is carried through blood arteries throughout the body. Blood is carried away from the heart through arteries. The blood is brought back to the heart by veins. Body cells and tissues are surrounded by capillaries that transport and absorb nutrition, oxygen, and other chemicals.
- Blood vessels are the channels or conduits through which blood is distributed to body tissues.
- The arteries (red) carry oxygen and nutrients away from your heart to your body's tissues. The veins (blue) take oxygen-poor blood back to the heart. Arteries begin with the aorta, the large artery leaving the heart. They carry oxygen-rich blood away from the heart to all of the body's tissues.
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