Which is the best method for the conservation of wild relatives of plants?

The following configuration of gates is equivalent to

What is the primary purpose of data entry in the context of mathematical research?

Which chemical must be applied to the roots to keep the leaves of a plant green?

The foci of the ellipse $\frac{x^2}{16} + \frac{y^2}{b^2} = 1$ and the hyperbola $\frac{x^2}{144} - \frac{y^2}{81} = \frac{1}{25}$ coincide. Then the value of $b^2$ is

The magnetic susceptibility of a paramagnetic material at $-73^{\circ} C$ is $0.0075$. What will be its value at $-173^{\circ} C$?