False, Carbon usually forms four covalent bonds.
If the Sun were to turn into a black hole, or be replaced by a black hole
with the same mass as the Sun, then Earth would continue to orbit it
as usual. (But it would be very cold and dark around here.)
Answer:
the blood from carrying oxygen to the tissues of the body
Explanation:
Answer:

Explanation:
= Refractive index of bubble = 1.33
f = Frequency of light = 
c = Speed of light = 
The wavelength of light is given by

Wavelength is also given by

m = 1 for minimum thickness

The minimum thickness is 
It is true. Time is always measured in seconds.