The right answer is A.) DNA in mitochondria
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Eukaryotic cells, with their many intracellular organelles, have long been considered progeny of prokaryotes that would have become more complex as a result of genetic mutations. But from the 1960s, biologist Lynn Margulis proposed an alternative explanation that was first received coldly by the scientific community. His endosymbiotic theory, proposed in a more formal way in a 1981 book, proposes that eukaryotic cells as we know them today would be the result of a series of symbiotic associations with different prokaryotes.
Mitochondria and chloroplasts also have their own DNA that is not trapped in a nucleus, which is also the case with prokaryotes. However, the proteins encoded by this DNA do not cover all mitochondrial proteins. The prokaryote is thought to have lost some genes to the nucleus of the cell, a process known as "endosymbiotic gene transfer". For this reason, mitochondria and chloroplasts are now host-dependent for the synthesis of most of their components.
Over the next decade the Ogallala aquifer will be completely depleted and will affect portions of the central and southern High Plains Aquifer (HPA). The Ogallala Aquifer is one of the largest bodies of water in the United States and is is generally used by farmers for irrigation of crops. As the continuous depletion of the aquifer occurs, it may become problematic for agricultural industries to sustain their farming.
Answer:
Explanation down below!
Explanation:
Well, the food chain refers to the chain of consumption of the organisms in the ecosystem which nutrients and energy pass, as one organism eats another. For instance, the plant gets consumed by the herbivores or omnivores, e.g. like rabbit, then the rabbit gets preyed on by the snake, the snake got consumed by the hawk, then the hawk dies, worms and maggots, feed off from the carcass, and eventually the remains/decays return to the soil as additional nutrient or fertilizer. The whole process repeats itself over and over again.
Energy pyramid, refers to the "pyramid" of energy consumption basically. The pyramid is divided into groups and their amount of consumption and production of energy. With producers (such as plants), primary consumers ( such as herbivores), secondary consumers ( such as carnivores) and tertiary consumers (and carnivores). The same example above can be given, from the plant to the hawk. However, the energy pyramid considers the energy transfer as one organism eats another.
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Having blood glucose levels that are too high or too low is very dangerous. Having a blood glucose level that is too high results in high blood pressure. Having a low blood glucose level causes hypoglycemia. Hypoglycemia causes symptoms like dizziness, fatigue, exessive sweating, and shaking.