Answer:
Elephants with small or no tusks are not hunted, resulting in an increase in elephant population with smaller tusks.
Explanation:
Inheritance: Tuskless elephants survive meaning that the small or no tusk gene becomes increasingly evident in the future generations.
Answer: x+y=21, 3x+4y=68
Explanation:
Here x represents the number of small button and y represents the number of large button,
And, According to the question,
Total number of button = 21
Thus, x + y = 21
Also, She sells the small buttons for $3 and the large buttons for $4, and earns a total of $68
That is, 3x + 4y = 68
Thus, the system of equations that can be used to calculate the number of large and small buttons sold are,
x + y = 21, 3x + 4y = 68
First Option is correct.
<u>Answer:</u> The given reaction is a "Dehydration Synthesis Reaction".
<u>Explanation:</u>
In chemical science the antonym of hydration is dehydration reaction which is a common process of conversion take place by involving loss of water from reacting molecule or ion. For an instance the dehydration process help in formation of disaccharide (sucrose) from two monosaccharides (glucose + fructose) as given in reaction.
Some other examples are like conversion of an acid and an alcohol into an ester and reaction called as "Fischer–Speier esterification", Conversion of an alcohol to alkene etc. Normally dehydration is followed by heating or leaving at room temperature, although it is a time taking process. Some common dehydrating agents are like alumina and sulfuric acid for organic synthesis.
Answer:
4600-4500 million years ago, the Earth formed and its crust cooled to become solid. 4500-4400 million years ago, the oldest known thing to have formed on Earth, zircon, formed along with solid crust and oceans. 4200-4100 million years ago, the close of the Hadean Period (there are no surviving rocks).
Its all of the above, bc taxonomy is where u classify organisms
