I think either rapid of human population growth or global warming
Answer:
The answer is A
Explanation:
It is logical because the balloon lets the student see how much gas is released in the reaction. the balloon inflates with invisible air the student will normally not see.
After passing through the cornea, light travels through the pupil (the black dot in the middle of the eye). The iris—the circular<span>, colored area of the eye that surrounds the pupil—controls the amount of light that enters the eye.</span>
Nowadays, different countries are constantly emerging and
expanding their liabilities which may include the field of medicine. The
disease that is being discussed by the instructor that is considered nearly
eradicated is probably the measles. This disease is caused by Paramyxovirus which
is a major respiratory pathogen among infants and young children. Measles is
also known as “rubeola virus”, an acute, highly respiratory symptoms and a
maculopapular rash that affects the mouth, head, body and extremities. It
begins with the appearance of Koplik spots which may end up to some
complications like symptomatic encephalitis and subacute sclerosing
panencephalitis(SSPE). In order to prevent this type of disease MMR(Measles, Mumps
& Rubella) Vaccine is needed. According to some of the reports, it is still
common to some of the countries, but WHO campaigns to eradicate the disease worldwide
by the year 2020.
