Questions

Nuclear power energy source generates radioactive waste.

Elvis Presley

When two or more chemical species combine to form a single product, the reaction is said to be synthesis reaction. It is also called as Direct Combination reaction.

Here in the given options, Sodium (Na) combines with Chlorine (Cl) to form a more complex single product Sodium Chloride (NaCl).

A primary key is a special relational database table column or combination of columns designated to uniquely identify all table records. That is, A primary key is a column or set of columns in a table that uniquely identifies tuples (rows) in that table.

A primary key, also called a Primary Keyword.

Main Features Primary key are ::

It must contain a unique value for each row of data.

It cannot contain null values.

A trampoline is a sheet or web supported by springs in a metal frame and is used as spring board.

Most producers use sun light for making their energy in the process of photosynthesis. The energy they prepared is sugar and glucose. 

Ctrl+Shift+F Opens the Font dialog box with the focus at the Font combo box.