used to emphasize speaker's belief that what is said is true.

Study of plants, animals and their environments.

branch of science concerned with nature and properties of matter and energy. The study of heat, light, and energy on objects.

To make a public statement about a plan, decision.

Adding a note to a document; such a note.

sympathetically aware of other people's feelings. When you get the meaning correctly; comprehension. To know the meaning of language, what someone says.

large natural elevation of earth's surface rising abruptly from surrounding level. Very high pieces of lands, higher than a hill.

Someone giving advice in business, law etc..

legally recognized subject or national of state or commonwealth. People who belong to and has rights in a country.

Creating interest, happiness or pleasurable fear. To make someone feel happy, interested or eager.

Act of adding something; thing that is added.

Extremely good. used to indicate approval or pleasure.

published collection of poems or other pieces of writing.

Forming a necessary part, base, or core. (Music) the lowest note in a harmony.

Best liked or most enjoyed. A thing that someone likes best or enjoys most.