Bacteria in our gut help to protect us by crowding out some of their dangerous relatives that can cause disease. Other good bacteria have been used in medicine to create antibiotics, and others still are used in food production to make fermented foods (think sauerkraut, yogurt, kimchi and kombucha.)
Answer:
C. Can be made up of a combination of different elements
Explanation:
The definition of a chemical compound is: "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. Two atoms of the same element bonded in a molecule do not form a chemical compound."
Source: Wikipedia
In the 1800s the matter was divided into two categories
which are:
1) Organic matter
2) Inorganic matter
<span>The difference between them was that organic
referred to living matter which have life in them as opposed to inorganic
matters which are lifeless or are of geological nature such as rocks,
mountains, minerals etc.</span>
Generally, hurricane causes transfer of heat from the ocean to the atmosphere through evaporation. The evaporation of water from the sea surface into the atmosphere is enhanced by hurricane's surface wind, which transport the water vapours to the part of the atmosphere called troposhpere. The wind speed in an hurricane is directly related to the surface pressure of a storm, the stronger the difference in the air pressure in the ocean surface, the higher the wind speed.
Answer:
We can predict or comment about reactivity of elements by taking into consideration their electronic configuration that imparts stability or un-stability to an atom.
Explanation:
Reactivity : It refers to the affinity of a substance to combine with other substance .
Elements are mainly of two types :
In terms of metals or non metals it can be defined as tendency to loose or gain electrons .
- On the basis of it ,we can easily make out or comment about the reactivity of element (metal or non metal ) .Like ,if an element has completely filled outermost shell or we can say have stable electronic configuration then it is already stable .Therefore , it won't react with any other element .
- But, if its outer shell isn't complete then in order to attain stability it will combine or react with other .Hence , we can say it will be quite reactive .
