arranged in series or according to scale. To move up from a position to a higher, better one.

study of living organisms, divided into many specialized fields that cover their morphology, physiology, anatomy.

achieved or maintained by careful and deliberate effort. To focus on learning something usually at school.

action of carving. To make a cut in, e.g. to write your name on tree.

carved or cast figure of person or animal. Stone or metal images of a person, often carved.

The act of composing letters on paper. To invent or create a computer program. To compose letters and words on paper or a screen.

ability to become aware of something through the senses.

likely or prone to be affected by. conditionally upon. People who take part in experiments or tests. To cause to suffer or experience something.

(Of sand, etc.) to be blown into heaps by the wind.

amount, level, or extent. Qualifications received after completing university.

In a very careful, correct way.

make determined efforts to deal with.

The way a person or thing acts; manner.

Whether someone is homosexual or heterosexual.

without doubt.