Answer
C. It becomes plutonium-239
Explanation
Absorption of a neutron in the uranium-238 nucleus yields uranium-239, which decays after 23.47 minutes through electron emission into neptunium-239 and ultimately, after 2.356 days, into plutonium-239.
Petroleum stores energy from the sun and is carbon based, this characteristics make it a valuable resource.
<u>Explanation:</u>
Petroleum, a non-renewable fossil fuel has been in great demand as it makes transportation faster. Also we can convert petroleum to different types of liquefied petrol, gasoline and other igniting agents.
Fossil fuels are valuable energy sources because they contain hydrocarbon and other carbon-based materials. From light into heat into electricity, the energy saved with coal and oil arises from the sun, as they arose as plants and animals.
Along with being used as igniting agent, petroleum can also be used for generation of electricity, washing clothes in dry wash, as a lubricant in some of the automobile parts. Also it is used in sports equipment, manufacturing machines as lubricants, carpeting and other every day uses are there for petroleum.
Answer:
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Answer:
If damage is done to the human skeletal structure it cannot be healed or reversed: INCORRECT.
Explanation:
- Human DNA is capable of repairing itself: <em>CORRECT.</em> It has several ways to do it, repairing bases through excision, by photoreactivation, repairing mismatches, by repairing double-strand breaks and activating SOS responses.
- If damage is done to the human skeletal structure it cannot be healed or reversed:<em> INCORRECT.</em> The human body has a bone healing process that allows the creation of a cartilaginous scaffold than then becomes a bone matrix transforming the outer laminar bone into compact bone.
- The human skin is capable of self-heal due to the human cells: <em>CORRECT. </em> A wound in human skin is healed in a process that includes hemostasis, the creation of a blood clot, followed by an inflammatory phase and de successive creation of new epidermis. Many human cells are involucrated, such as fibroblasts and macrophages.
- When synthetic material gets damaged it's irreversible: <em>CORRECT. </em>These kinds of materials do not have a system to self-heal by itself.
- Biological material has the capability of healing due to vascularity and its cells: <em>CORRECT.</em> Vascularization is the growth of blood vessels, it is fundamental to have effective transport of oxygen, nutrients, and removal of cell-secreted waste for the survival of cells, this allows the biological material to heal.
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