A. decrease the burning of fossil fuels
They are able to use imperatives and interrogatives.
They frequently use the auxiliary verb "have" in statements.
A primary reason for needing a new vaccine for influenza each year is that there could be mutation of surface proteins leading to a new outbreak
<h3>What is antigenic drift?</h3>
Antigenic drift is a phenomenon that causes small changes or mutations in the genes of influenza viruses leading to changes in their surface proteins of the virus, which are HA (hemagglutinin) and NA (neuraminidase).
For this reason, new influenza vaccines are produced yearly to alter the effects that may emerge as a result.
Thus, a primary reason for needing a new vaccine for influenza each year is that there could be mutation of surface proteins leading to a new outbreak
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In developed countries, most individuals die at <u>hospitals</u>, whereas in developing countries most individuals die at <u>home</u>.
In excessive earnings nations the bulk of humans die of simply vast organizations of reasons: cardiovascular sickness and cancer. As cardiovascular sicknesses declined, extra humans died from cancer. The proportion of deaths from maximum different vast reasons of dying increased, too. This has brought about more range in reasons of dying. Generally, wealthier international locations have a better common existence expectancy than poorer international locations, which may be argued to be done via better requirements of living, extra powerful fitness systems, and extra assets invested in determinants of fitness (e.g. sanitation, housing, education).
Thus, option a is the correct choice.
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