material culture includes all of the physical objects that people create and give meaning to. Cars, clothing, schools, computers, and books would be examples. An object only becomes part of culture after meaning have been given to it. A rock in a field has no meaning until it is used as a tool or to build a fence.
A) Each DNA nucleotide is made up of a sugar, a phosphate group ... Adenine and thymine are connected by two hydrogen bonds, and cytosine and guanine are ... In the case of RNA, the five-carbon sugar is ribose. DNA is made up of two strands that are twisted around each other to form a right-handed helix, called a double helix. Base-pairing takes place between a purine and pyrimidine: namely, A pairs with T, and G pairs with C. In other words, adenine and thymine are complementary base pairs, and cytosine and guanine are also complementary base pairs. This is the basis for Chargaff’s rule; because of their complementarity, there is as much adenine as thymine in a DNA molecule and as much guanine as cytosine. Adenine and thymine are connected by two hydrogen bonds, and cytosine and guanine are connected by three hydrogen bonds. The two strands are anti-parallel in nature; that is, one strand will have the 3′ carbon of the sugar in the “upward” position, whereas the other strand will have the 5′ carbon in the upward position. The diameter of the DNA double helix is uniform throughout because a purine (two rings) always pairs with a pyrimidine (one ring) and their combined lengths are always equal.
<h2>Correct Answer is option "d"</h2>
Explanation:
- Heroine is an drug of opiod plant which is made up of from morphine,a natural substance which taken from the seed pod of the different opium poppy plants.
- Heroine is found in various form such as in white powder and brown powder.
- Other common names for heroine are horse,smack & hell dust.
- People takes heroine in different route of administration such as few people smoke it, some inject, or other used as sniff etc.
- Heroine enter in brain rapidly and combined with opiod receptors on cells ,it involve in pain and pleasure,controlling heart rate etc.
- It show both effects short term and long term effect on the brain and body.
- Hence, the correct answer is option d "Heroine"
What is the best desciption of the camouflage by natural selection?
