Answer:
• oxygen
• nitrogen
• carbon
Explanation:
Electronegativity is a scale that measures an atom's attraction towards an electron. The more electronegative an atom is, the more it attracts an electron. Electronegativity increases as we go up and from left to right in the periodic table.
Hence, the following elements are considered to have a high level of attraction for surrounding electrons
• oxygen
• nitrogen
• carbon
Answer is 6 feet away
This applies to patients who have received a radioactive substance during their treatment, especially for cancer. An example is a patient who has been prescribed radioactive iodine for treatment of hyperthyroidism. Maintaining a safe distance of approximately 6 feet from the patient minimizes exposure to the radiation.
Answer:
Valves
Explanation:
Circulation is maintained in the veins by the valves.
Veins are part of the blood circulation system and blood vessels that transports deoxygenated blood from parts of the body back to the heart. Within the veins are valves (flap like structures) which maintain circulation by ensuring that blood in the veins move in the proper direction toward the heart. Blood that is being transported through the vein usually have low pressure. The valves work by providing pressure to enhance the blood’s movement, and they also disallow backflow of blood as it moves through the body. Most of the veins, especially the ones located in the legs and arms usually have one-way valves.
Answer: single- unit smooth muscle
Explanation:
