Which conclusion can be drawn from the table?

Compared to industrialised countries, developing countries:

1 mole of gas occupies 24 litres at room temperature and pressure, so the number of moles in
72 litres is:

Which one of the following is NOT an inherited disorder?

A plastic that softens every time it is heated is said to be:

The gas that relights a glowing splint is:

The number of litres in 2000 cm³ is:

A typical soil contains mineral particles, humus, water, air and:

In a plant, water and dissolved minerals are transported in the:

In order to carry out photosynthesis, a plant needs:

The correct equation for photosynthesis is:

Which one of the following would NOT give rise to a systematic error in an experiment?

Which of the following are examples of environmental variation in humans?
Ⅰ hair colour
Ⅱ height
Ⅲ intelligence
Ⅳ body mass

A loudspeaker emits a steady note.A girl sings a note which is of lower pitch but higher volume. The sound wave she is producing has:

Some foods contain flavour enhancers. These food additives:

The existence of a neutral particle named the neutron was first confirmed experimentally by:

Which of the following describes real accounts?

Which of the following social issues are associated with the use of illegal drugs by adolescents?

1. Criminal activity
2. Indiscipline
3. Early marriage
4. Poverty

In data representation, a __________ represents one character which may be a letter, number, or punctuation mark.

Quantity of electricity in coulombs = current in amps multiplied by: