Questions

Protons carry a positive electrical charge, electrons carry a negative electrical charge and neutrons carry no electrical charge at all. The protons and neutrons cluster together in the central part of the atom, called the nucleus, and the electrons 'orbit' the nucleus.

Direct Materials doesn't come under Fixed Cost because it vary with changes in the activity level of a business.

Fixed Cost :

A fixed cost is a cost that does not change over the short-term, even if a business experiences changes in its sales volume or other activity levels.

It is of some importance to understand the extent and nature of the fixed costs in a business, since a high fixed-cost level requires a business to maintain a high revenue level in order to avoid generating losses.

Examples of Fixed Cost are:

Insurance, Salaries, Rent, Property Taxes,...

Fertilization is the process in which a single haploid sperm fuses with a single haploid egg fuse to form a zygote.  

An animal zygote under go mitosis and divides to form a hallow ball of cells called blastula.

Gorakhpur railway platform in Uttar Pradesh is the longest railway platform in the world.