Answer:
Deserts can form even on tropical coasts beside cold ocean currents, such as the west coast of South America. The currents cool the air, which then rises and warms as it moves over land, drawing up moisture that is later precipitated as the air moves farther inland.
The correct answer to the question which is stated above is:
RNA has the oxygenated form of ribose sugar, while DNA has deoxygenated form of ribose sugar.
>The pentose, which is ribose, is oxygenated in RNA while in DNA it is deoxygenated
a) True
Hope this helps!!!
Answer:
extinction
Explanation:
Based on the information provided in regards to the situation at hand it can be said that both of these examples illustrate extinction. This term refers the fading out of conditioned responses over time if they are not properly reinforced. This is what is happening in this situation since the dog is not reinforced with food for salivating then the response begins to fade until it is completely gone.
B. decrease the amount of nonrenewable resources available.
C. be very explosive.
D. increase the chances of a volcanic eruption.
A. release toxic elements into the groundwater or surface water.
Answer:
The age of 35 years was established to offer invasive techniques, because at this age the risk of secondary abortion was balanced by the technique and the risk of chromosomal alteration.
Explanation:
The possibility of early diagnosis of fetal anomalies of various kinds (neural defects, chromosomopathies, etc.) has been one of the top concerns of gynecologists and geneticists, for obvious reasons.
Throughout these years, prenatal diagnostic techniques have been developed that allow therapeutic decisions by doctors or viability of pregnancy by parents. These techniques are initially performed with non-invasive methods (biochemical determinations, ultrasound), and if the suspicion is increasing, it is passed to more invasive techniques such as amniocentesis or chorionic villus biopsy.
Given that in the latter there is a risk of loss of pregnancy, it is previously attempted to ensure that the indication is correct, and for this, new biochemical tests and risk calculation systems have been added.
Until recently the criterion for establishing the risk of fetal chromosomal abnormality was the mother's age, since there was a clear relationship between maternal age and chromosomal abnormalities, especially Down. The age of 35 years was established to offer invasive techniques, because at this age the risk of secondary abortion was balanced by the technique and the risk of chromosomal alteration. The problem was that a small number of cases were detected. Therefore, other parameters have been sought that estimate more precisely those subsidiary chaos of early detection.
The estimation of the risk in a given pregnant woman is done by multiplying the risk associated with her age for the specific gestational age.
Currently, most prenatal tests consist of AFP, estriol and human chorionic gonadotropin (hCG), which is the triple test, which is a blood test that assesses the risk in a pregnancy of having a Down syndrome or spina bifida It is not a test that tells us whether or not the fetus has any of these defects. It is a test that tells us the probability of risk of having them. Studies have shown that about 70% of fetuses with Down syndrome can be identified early combining the analysis of the mother's age and the results of the triple test.