According to the law of reflection, what is the angle of incidence? It is the angle the incident ray makes with a line drawn perpendicular to the viewer.

It is the angle the incident ray makes with a line drawn perpendicular to the reflecting surface.

It is the angle the incident ray makes with a line drawn parallel to the reflecting surface.

It is the angle the incident ray makes with a line drawn perpendicular to the reflecting surface. ✓

Explanation:

The law of reflection states that the angle of reflection equals the angle of incidence-er Oi. The angles are measured relative to the perpendicular to the surface at the point where the ray strikes the surface.

~ʆᵒŕ∂ཇꜱꜹⱽẻⱮë

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =

0 = 0.40 / 0 = 0

= 0.20 = 9.80 ⁄2 =?

=0 , = = 0.20 =0.50 0 0.40 ⁄

=0−122 =0−12(9.80 ⁄2)(0.50)2 =1.2