United Arab Emirates - Rest of the country

The force exerted by the ground on each tyre is equal to the weight of the car.
The force exerted by the ground on each tyre is equal to four times the weight of the car.
The force exerted by the ground on each tyre is equal to one fourth of the weight of the car.
The ground exerts no force on the tyres of the car.

Species A produces a chemical that repels elephants.
Elephants will eat species B before species A.
Elephants do not like the taste of leaves from species A.
Elephants avoid feeding on acacia branches with ants.

Elephants  trunks have soft skin tissues that are sensitive to ant bites.
Ants nest in a number of species of tree that live on the savannah.
Any insects that elephants ingest when they are eating vegetation will provide a small source of protein.
Because elephant herds travel, elephants tend to change their feeding location often.

Elephants will develop resistance to the ants and destroy a larger number of trees.
Ants will destroy species B trees and the number of trees on the savannah will fall.
Elephants will do less damage to species B trees and the number of species B trees will increase.
Ants will abandon species A trees and live only in species B trees.

Is damage to acacia trees caused mainly by elephants?
Are fences the best way to protect acacia trees from elephants?
Do elephants play a key role in maintaining the population of ants on the savannah?
Do elephants have other sources of food besides acacia trees?

A small volume of A and a large volume of B
A large volume of A and a small volume of B

Replacing water made the ammonoid shell stronger.
Replacing water helped adjust the overall density of the ammonoid.
Replacing water helped maintain a stable body temperature of the ammonoid.
Replacing water helped the ammonoid avoid being carried away by underwater currents.

Geothermal power plants generate less energy than fossil fuel power plants generate.
Replacing fossil fuel power plants with geothermal power plants would reduce CO2  and SO2  pollution.
Building more geothermal power plants would eventually eliminate CO2  and SO2  pollution produced by power plants.
SO2  pollution causes more environmental damage than CO2  pollution causes.