Plasma Membrane, nucleus, and cytoplasm
A natural decay of nuclides occurs in: A.) random manner.
Answer:

Explanation:
Hello there!
In this case, according to the given information, it turns out possible for us to solve this problem by using the following equation, defined in terms of energy, Planck's constant, wavelength and speed of light:

Thus, we solve for the wavelength as shown below:

And finally plug in the energy, Planck's constant and speed of light to obtain:

Regards!
option A is a precise one to be selected!
Answer:
The wood
Explanation:
The block of wood shall float in the water while the iron key would sink due to the weight.