NUTRIENT CYCLES

Multiple Choice

This cycle represents the _______ and reutilization of water in nature

• depletion

• circulation

• preparation

• discharge

Multiple Select

Water moves through the environment through SURFACE processes such as:

• infiltration

• evaporation

• condensation

• precipitation

• surface run-off

Multiple Choice

Water covers about ____% of the earth’s surface

• 30%

• 71%

• 78%

• 90%

Multiple Choice

Water is an integral component of nature which needs to be _____ and _____ to support the survival of living organisms.

• polluted, preserved

• stored, wasted

• used, depleted

• replenished, purified

Multiple Choice

The circulation of water helps to regulate w________ and c________,

• weather, climate

• waste, conditions

• wealth, crime

• warm, cold

Multiple Select

The following are uses of water:

• agricultural activities

• recreational activities

• providing a heat source

• domestic purposes

• industrial purposes

Multiple Choice

The carbon cycle represents the circulation and reutilization of ________ in nature

• carbon atoms

• nitrogen atoms

• carbon traits

• oxygen

Multiple Select

THREE main processes that help to maintain balance in the cycle are:

• photosynthesis

• carbonation

• respiration

• excretion

• decomposition

Multiple Choice

Carbon is the structural component of organic molecules and an important element in _____ energy storage.

• chemical

• physical

• heat

• light

Multiple Choice

In the atmosphere, carbon exists as carbon dioxide, which is used by plants through the process of _______________.

• decomposition

• photosynthesis

• respiration

• atomization

Multiple Choice

Carbon dioxide is a ____________ gas that traps _______ in order to regulate temperature in the atmosphere.

• heated; gases

• greenhouse; heat

• regulatory; air

Multiple Choice

When plants and animals die, they ___________ and are buried for years and may convert into ____ fuels, which in return are used by humans to release carbon dioxide in the atmosphere

• disintegrate; cold

• stabilize; heated

• decompose; fossil