Answer:
Option B, The neutral nature of water changes due to mixing of various salts, bases, and acids, thus changing its pH.
Explanation:
Water obtained from natural sources like underground water, sea water, rain water etc are not neutral in nature. This is so because water extracted from all these sources contains several dissolved salts/chemical components which either reduces or increases their pH.
The ground water contains lot of dissolved carbonates and bicarbonates (as it remains in contact of rocks beneath the earth) due which it becomes extremely hard and has a pH greater than 7. On the other hand rain and snow water are acidic in nature and have a pH between 5 to 6.
Thus, it is only due to the dissolved bases and acids in natural water which makes it either acidic or basic in nature.
b.all recessive traits
c.1/3 dominant traits
d.2/3 recessive traits
e.none of the above
Answer:
A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke. Mutations can occur during DNA replication if errors are made and not corrected in time.
b. The narrator's war experiences are in the distant past and no longer influence the present.
c. The narrator's platoon was surrounded by the enemy, similar to the way the narrator feels when he is surrounded by his family.
d. The narrator continues to write war stories, but he is unable to talk about his wartime experiences.
e. The narrator feels his daughter and the young enemy continually cause him to face his past.
The correct answer is option C, The narrator's platoon was surrounded by the enemy, similar to the way the narrator feels when he is surrounded by his family
Reason -
In the story by Tim O’Brien’s, It is clear that the narrator is puzzled at two instances and at these two instances the word "Ambush" relate to its title The two instances are given below:
a) The first instance is when the narrator’s daughter is asking him question about his war time memories. The narrator feels guilty when he lied to his daughter in order to be a hero in front of her but somewhere he was aware that he was lying.
b) The second instance is when the narrator threw a bomb and killed a soldier of another nation. He is guilty about killing anyone during wartime.
Answer:
A. The narrator's present life cannot escape the bombardment of his wartime memories and actions.
a. two or more combined elements
b. the smallest units of an element
c. particles inside a nucleus
d. different forms of an element
Next
Atoms are best described as 'the smallest units of an element', because each different kind of atom corresponds to a different element. Atoms are themselves composed of protons, neutrons, and electrons.
The phrase that best describes atoms is 'the smallest units of an element' (option b). This is because atoms are the basic pieces that make up all matter, and every different atom corresponds to a different element. An atom itself is composed of sub-atomic particles: protons and neutrons are stacked up into the nucleus at the center of the atom, while electrons orbit the nucleus in various energy levels.
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