Various options are provided as possible answers to the following questions - NSC Marine Sciences - Question 1 - 2021 - Paper 1

Pill bugs and sand lice are typically found in abundance in the upper zone of sandy beaches of B) West and South Coasts of South Africa, where environmental conditions are favorable.

The balance is known as the A) greenhouse effect, which is crucial for maintaining the Earth’s climate.

Harvesting energy from tides in South Africa is not viable as A) the tidal range is too small, limiting energy generation potential.

This continuous area of water is referred to as B) fetch, which affects wave formation.

The cost that does NOT form part of the research and development costs is D) Maintenance costs, as they are typically considered ongoing operational expenses.

The correct combination is C) Increases / Increases, as both kinetic energy of gas molecules and the volume of the balloon increase when heated.

The polysaccharide used in some brands of toothpaste is A) Carrageenan, which helps to stabilize and thicken the product.

Such a location will be classified as C) Csa, which indicates a Mediterranean climate.

At 30 m below sea level, the balloon will occupy B) 2.6 litres due to the increased pressure affecting gas volume.