Identify the organism shown in the given figure.

$A$ line with positive direction cosines passes through the point $P(2,-1,2)$ and makes equal angles with the coordinate axes. The line meets the plane $2x+y+z=9$ at point $Q$. The length of the line segment $PQ$ equals

Golden rice is a transgenic crop of the future with the following improved trait:

The solution of the differential equation $x y^2 d y - (x^3 + y^3) d x = 0$ is

The organization of living organisms starts with which level?

Half-life of a radioactive substance is $20 \, min$. The difference between the time when it is $33 \%$ disintegrated and $67 \%$ disintegrated is approximately ......... $min$.