Answer:
Genetic drift is the change or mutation in the gene pool over generations. It can take several generations for a genetic drift to take place in a community. But if the population of that generation is smaller, there are higher chances that the genetic drift would occur over the next very generations. Any mutilations that disrupts the natural course of genetic transfer can cause genetic drift to take place in those species.
Answer: Sir George Airy
Explanation: The prime meridian is a geographical reference line that passes through the Royal Observatory, Greenwich, in London, England. It was first established by Sir George Airy in 1851, and by 1884, over two-thirds of all ships and tonnage used it as the reference meridian on their charts and maps.
The answer is D. Btw C is false because in some countries you have to be 18 years old for example wich means not everyone can vote.
Answer:
Check explanation.(esp. last part of the Explanation section).
Explanation:
I must confess to you, this question is somehow tricky, but no matter what we are smarter! This question is based on acid base extraction. the organic solvent diethyl ether is the organic base while H2O is the neutral (that is water is acting as a neutral medium). When the hexanoic acid [CH3(CH2)4CO2H is added and mixed with organic solvent diethyl ether and water. The ether which is at the top layer contains the [CH3(CH2)4CO2H and the water which is at the buttom contains [CH3(CH2)4COO- in which a proton is taken away from [CH3(CH2)4COOH through the addition of
So, what is tricky about the question? The fact that there are two media makes it tricky if we go for water phase as [CH3(CH2)4COO- and if we go for ether phase as [CH3(CH2)4COOH, they are both right. So, both are correct but in this question ether phase as [CH3(CH2)4COOH will be appropriate here.
Your answer is D, hope this helps
