officially agreed or accepted as satisfactory. To have a positive opinion of someone or something.

A person or thing acting in place of another. use or add in place of.

difficulty or problems. To do difficult or bad things which cause problems.

strong feeling deriving from one's circumstances, mood. Feelings such as sadness, anger or love.

considered in relation or in proportion to something else. person connected by blood or marriage.

denoting instrument or device used to ascertain size of something. To calculate size, weight or temperature of.

Preparation by treating something in a certain way. To organize and use data in a computer.

used especially at the beginning of a sentence to introduce the last point or idea.

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

Diesel fuel made biologically.

unwelcome or harmful matter. Questions to show understanding of a math concept.

place, person, or thing from which something comes or can be obtained. To get, e.g. a raw material, from somewhere.

The way that something looks.

When you your body heat is above normal.

(Of expenses) deductible against tax.