Answer:
Azurite and Magnesite react with hydrochloric acid.
Explanation:
These 2 rocks contain the carbonate mineral calcite dolomite. Carbonate minerals are unstable in contact with hydrochloric acid. When acid begins to effervesce (fizz) on a specimen, a reaction takes place and bubbles of carbon dioxide evolve, thus indicating the presence of minerals like calcite dolomite.
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Hippocrates was a Greek physician, he is well known for the discovery of the medicines, which were based on the scientific observation. He is also known as virtual originator of the etiology and the pathology.
Hippocrates suggested that the body can remain disease free, or the chances of being diseased can be diminished, if good diet, fresh air, cleanliness and exercise are maintained.
Hence, four things, which help body to heal itself, according to Hippocrates are:
- Good diet
- Cleanliness
- Exercise
- Fresh air
Answer: It will affect muscle contraction because it is needed for the formation of muscle contraction cross-bridge.
Explanation: During muscle contraction calcium binds to troponin, a protein complex that regulates muscle contraction by exposing the binding site of actin filament. Actin filament active site is where myosin head binds to, creating a cross-bridge using enzyme ATPase to speed the reaction. Calcium ion are needed to activate troponin movement, otherwise it stays in its inactive form blocking the active site of actin filament. Without calcium ions, troponin will not move and there will be no muscle contractions.
A star is born whenever a nebula expands.
This is false.
A star is born when another star gets old from the remains of that a new star is born. <span />
Answer:
Answer : shivering and pallor.
Explanation:
Hyperthermia and fever are characterized by increase in body temperature. But ,the main difference between the two is that, increase in body temperature due to illness or infection is known as fever, while hyperthermia occurs simply because the body can't release enough heat.
It should be noted that, the body release heat through some activities like breathing and sweating, to maintain normal body temperature.
In this case, the presence of fatique , racing of heart, and an upset stomach shows the presence of infection or illness, which are characteristics of a fever.
