<span>Here are the choices for the question stated above:
a.deserts b.grasslands c.mountains d.rainforests
The answer would be letter d. rainforests.
</span><span>Basing on the animals' webbed foot, it should mean that these animals are good swimmers. Thus, webbed foot enables effective propulsion in water.</span>
An infection behind the ear drum
Her hypothesis is wrong. <span>Increased </span>temperature<span> causes an increase in kinetic energy. The higher kinetic energy causes more motion in the </span>gas<span> molecules which break intermolecular bonds and escape from solution. Check out the graph below: As the </span>temperature<span> increases, the </span>solubility<span>of a </span>gas<span> decreases</span>
<h2>Down Syndrome</h2>
Explanation:
Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21
- Down syndrome is a genetic disorder caused when abnormal cell division results in an extra full or partial copy of chromosome 21
- Down syndrome is usually caused by an error in cell division called nondisjunction which results in an embryo with three copies of chromosome 21 instead of the usual two
- Prior to or at conception, a pair of 21st chromosomes in either the sperm or the egg fails to separates
- With development in embryo the extra chromosome is replicated in every cell of the body;this type of Down syndrome which accounts for 95% of cases is called trisomy 21
- Maternal age is the only factor that has been linked to an increased chance of having a baby with Down syndrome resulting from nondisjunction;here environmental agents such as drugs, chemicals, and radiation act as mutagens which induce mutation in the fetus
