Answer: <u>The spine</u>
Explanation:
In the study of animal anatomy,a landmark is a major point on the body that has biological significance. An anatomical landmark is a biologically-meaningful point in an organism.;these landmarks are used for the definition of corresponding anatomical points within species.
Posterior, describes a region that is at the back of the body.
Answer: a.Camouflage
Simulation is a deception in the characteristics of the organism which favors it's survival in the environment. Camouflage is a kind of simulation, in which the organism adapt the color or shape according to the surrounding environment in order to remain undetected by a prey and a predator. For example, chameleon is a reptile, which can change it's color according to the surrounding environment. It changes it's color to green in grass and remains brown in the tree bark in order to eat insects and remain undetected from prey and predator population.
Therefore, According to the simulation, camouflage helps predators to survive by allowing them to sneak up on their prey.
The use of retroviral therapies can increase the patient's risk of developing cancer because they may integrate recombinant DNA into the genome in ways that may misregulate the expression of genes. Therefore the correct option is D.
<h3>What is retroviral therapy? </h3>
Retroviral therapy is an HIV treatment where medicines are taken as prescribed by a healthcare professional. This treatment reduces the amount of HIV in an HIV-infected person.
HIV does not have a cure but antiretroviral therapy can reduce the risk of potential health issues caused by HIV.
This treatment can help to control the virus in an HIV-infected person within 6 months. The treatment for HIV cannot prevent the transmission of other sexually transmitted diseases.
Therefore the correct option is D.
Read more about retroviral therapy, here
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The answer should be the contraction of muscles.
Hope this helps mate.
