Answer:

Explanation:
The speed of light is
. It is required to convert it into nm/s.
The relation between nm and m is as follows :

So,

So, the speed of light is
.
I believe the SI unit for length is meters and I'm sure that the SI unit for mass is kilogram
Answer:
The biological sample that pregnancy tests use to detect pregnancy is urine
Reactants are what is changed in the chemical reaction. They go before the arrow when you wrote the equation. Products are what is formed when the chemical reaction occurs. Products always contain the same elements as the reactants, but they might be rearranged because of the reaction. In this picture, you can see that the reactants go before the arrow, and the products go after.
Earth orbits the sun in a imaginary plane called ecliptic