$DNA$ multiplication is called

Which is the most important center for lymph formation?

What is the equivalent capacitance of the system of capacitors between $A$ and $B$?

$1+\frac{1}{3 \cdot 2^2}+\frac{1}{5 \cdot 2^4}+\frac{1}{7 \cdot 2^6}+\ldots$ is equal to

Three non-zero non-collinear vectors $\vec{a}, \vec{b}$ and $\vec{c}$ are such that $\vec{a}+3\vec{b}$ is collinear with $\vec{c}$,and $3\vec{b}+2\vec{c}$ is collinear with $\vec{a}$. Then $\vec{a}+3\vec{b}+2\vec{c}$ equals to

When $CO_2$ gas is passed through an aqueous solution of $Na_2CO_3$,what is formed?