I wish I could help but I can I’m sorry so good night
<span>The major structure that supplies the cells with nutrients and removes their waste is the circulatory system. The circulatory system is composed of the heart, the blood vessels going from and back to the heart, and the blood that travels inside them. The blood vessels that carry nutrient and oxygen-rich blood to the cells are arteries. They become the thinner arterioles, and then the thinnest capillaries. With the exception of the pulmonary arteries, which carry non-oxygenated blood from the heart to the lungs, all arteries carry oxygenated blood. The capillaries disburse the nutrients and oxygen to the cells and pick up wastes and carbon dioxide, form into the thicker venules, then to form veins, which lead back to the heart (with the exception of the pulmonary veins, which carry oxygenated blood from the lungs to the heart). Veins also differ from arteries in that veins have valves to prevent blood from flowing backward.</span>
During complex and demanding tasks, teens distribute the workload evenly throughout the brain. In teenagers the prefrontal cortex is still developing and therefore they may rely on a part of the brain called the amygdala to make decisions and solve problems more than adults. The prefrontal cortex communicates with other sections of the brain through connections called the synapses.
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The cause of current climate change is largely human activity, like burning fossil fuels, like natural gas, oil, and coal. Burning these materials releases what are called greenhouse gases into Earth's atmosphere.
The female flowers mature before the male flowers, resulting in self-fertilization being preventing
