Answer:The dual cardiovascular demands includes: Option A (The need to pump additional blood to the surface of the skin.) And
Option E (The need to pump additional blood to working muscles)
Explanation:
When an individual is performing exercise under the hot atmosphere, the following demands are required:
--> there would be physiological increased demand of the skin to prevent further dehydration .
--> there would be increased energetic demands for muscular activities.
1.) The blood flow to ACTIVE MUSCLES during prolonged exercise under a hot day.
There is increase in carbon dioxide and hydrogen ions, decrease in oxygen levels will cause the smooth muscles of the blood vessels located at the active muscle sites to relax. This enhances the in flow of blood supply oxygen which is needed for the generation of Adenosine triphosphate (ATP) for energy. This requires a greater cardiac pumping capacity.
2) The flow of blood to the skin during during prolonged exercise in a hot day.
To avoid dehydrations during exercise which occurs through the lungs and skin, there is increased cardiac output to remove excess heat generated through thermoregulation of cutaneous circulation.
Answer:
C. The sun
Explanation:
The sun provides energy for the plant to do photosynthesis. Since all animal species depend on plants qnd the sun helps the plants, the sun is the original source of energy.
Ever cell has a gene code that's exactly the cell but some don't use that dba strand because specific parts need specific DNA
Alexander Fleming discovered the penicillin in 1928. He noticed that some bacteria he had left in a petri dish had been killed by naturally occurring penicillium mould.The penicillin began the era of antibiotics, has been recognized as one of the greatest advances in therapeutic medicine. The research required to determine if the penicillium extract was safe and killed bacteria was done at Oxford University.P<span>rogram of animal experiments and clinical trials was carried.</span>
Answer:
A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound.
