Other than improvements in hygiene, give two reasons for the low death rate from infectious diseases in modern hospitals.

Describe how living things are involved in the constant cycling of carbon.

What is meant by metabolic rate?

Metabolic rate is affected by the amount of activity a person does.
Give two other factors that may affect a person’s metabolic rate.

Name one plant hormone.

Give the main features of asexual reproduction.

Suggest one advantage of using tissue culture and not using cuttings to produce plants.

What is a drug?

Describe the pathway taken by the nerve impulse in the blink reflex.

Describe how natural selection could result in modern swordfish with long swords developing from ancestors with short swords.