The ancestors of elephants inhabited every continent except Antarctica and Australia. But the Asian and African elephants are the only ones to survive. Why?

Answers

Answer 1

Answer: The correct answer should probably be Natural selection. Those elephants could not adapt to the environment unlike those in Asia and Africa and eventually became extinct.

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Why stirring the water in an experiment will make results more reliable?
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How do restriction enzymes precisely cut bacterial plasmids to produce "sticky ends"? Make sure you discuss how the restriction enzyme identifies the target DNA sequence in the plasmid and name the enzyme that "cuts" the DNA.

Answers

A 'sticky' end is produced when the restriction enzyme cuts at one end of the sequence, between two bases on the same strand, then cuts on the opposite end of the complementary strand. This will produce two ends of DNA that will have some nucleotides without any complementary bases.Answer:

Explanation:

According to Freud's psychoanalytic theory, rationality as well as logical thinking and reasoning are controlled by our ______.a. pleasure principle
b. superego
d. id
e. ego
f. preconscious

Answers

According to Freud's psychoanalytic theory, rationality as well as logical thinking and reasoning are controlled by our a. pleasure principle because it can instinctively lead us to satisfy our basic needs which form logical sequence.

If an electron is gained, the atom has a ? Charge

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protons are positive
electrons are negative
neutrons are neutral

If an atom gains an electron, it will have a negative charge.

The diagram shows the general structure of a lipid, which consists of two main parts. mc006-1.jpg Which part is circled? alcohol group fatty acid carboxyl group unsaturated lipid

Answers

The circle part of the structure is the CARBOXYL PART.

Generally, lipids are naturally occurring molecules and they serve as sources of high energy value in humans. Basically, lipids are synthesized from glycerol and fatty acids. The number of fatty acids attached to the glycerol determine the type of lipid that the molecule is. The glycerol is a type of alcohol and is made up of hydroxyl ions. lipid bio molecules are soluble in non polar solvent and insoluble in water.

Answer:

CARBOXYL PART.

Explanation:

What is another name for haploid cells?