Which transformation requires a complete meltdown of the rock into magma? a. igneous rock to sedimentary rock b. sedimentary rock to metamorphic rock c. metamorphic rock to sedimentary rock d. sedimentary rock to igneous rock e. igneous rock to metamorphic rock

Igneous rocks are formed by the cooling of the magma.

Sedimentary rocks are formed by weathering and erosion of igneous rocks and then consolidation of the sediments.

Metamorphic rocks are formed when igneous or sedimentary rocks are subjected to heat and pressure.

The metamorphic rocks melts and forms magma which in turn cools down to form igneous rocks.

Similarly, sedimentary rocks melt down and forms magma which cools down to form igneous rocks.

So, the igneous rock is formed by cooling of magma, which is in turn formed from sedimentary and metamorphic rocks.

Of the given options only one option has the resulting rock as igneous.  

Hence the answer is

sedimentary rock to igneous rock

Vaccine against diphtheria, tetanus, and pertussis

Explanation:

DTap is a vaccine made mainly for helping children of younger age specially of or below 7 years to develop immunity in their body against the diseases diphtheria, tetanus, and pertussis. The name of this vaccine comes from the name of these diseases for which it has been made. It's booster immunization can be given at an age of 11 years which provide immunity against above mentioned diseases to adolescents and adults.

Breathing problems, paralysis, heart failure, and even death can occur in the Diphtheria. It is a contagious disease which spreads by coughing and sneezing.Nervous system is damaged in Tetanus which further causes muscle spasms or even death.Coughing spasms in the Pertussis are too severe and often lead to pneumonia, seizures, brain damage, and death.