Who is best teacher of biology in You tube​

thanks for the points

Step-by-step explanation:

I have studied biology, and in my opinion I really think the channel Amoeba Sisters and Ted-Ed biology help a whole lot. It made learning a bit interesting (as interesting as it could get).

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.

step-by-step explanation:

a rhombus is a parallelogram enjoying his symmetry.