What is the function of the radula?

What is the primary cause of coronary artery disease $(CAD)$?

The angle between the lines represented by $\cos \theta(\cos \theta+1) x^2 - (2 \cos \theta + \sin^2 \theta) xy + (1 - \cos \theta) y^2 = 0$ is

$A$ particle is performing $U.C.M.$ along the circumference of a circle of diameter $50 \ cm$ with frequency $2 \ Hz$. The acceleration of the particle in $m/s^2$ is

Which of the following substances is obtained from the fungus $Claviceps$ $\text{purpurea}$ (ergot)?

The number of unpaired electrons in $Zn^{2+}$ is