Questions

We know that, peninsula is a piece of land that surrounded by water on three sides.  Hence, it is what A piece of land almost surrounded by water i.e, three sides water and one side land.

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

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

The preamble to the constitution does not specify providing for economic equity.

Cerebrum is the largest region of the brain.

Here ‘passed each other’ means crossed each other’s path. No preposition is required by ‘passed’.

Gene is a hereditary unit consisting of a sequence of DNA that occupies a specific location on a chromosome and determines a particular characteristic in an organism.

In short it is a piece or segment of chromosome.

Genes undergo mutation when their DNA sequence changes. 

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