The temperature at which water boils depends mainly on ____________?

A. Air temperature
B. Relative humidity
C. Air pressure
D. Air density
E. The specific heat of air

A term biotype means ___________?

A. all individuals having same phenotype
B. all individuals having same genotype
C. all individual with different phenotype
D. all individuals with different genotype

Barnacles growing on the back of whale is an example for ________________?

A. mutualism
B. parasitism
C. amensalism
D. commensalism

Fine organic or inorganic particles suspended in air is called _______________?

A. particulate pollutant
B. gaseous pollutant
C. aerosol
D. none of these

Fog that most often forms as warm rain falls into a cold layer of surface air is called ______________?

A. Radiation fog
B. Evaporation (mixing) fog
C. Advection fog
D. Upslope fog

When oil and gas resources are burnt they kill many forests and lakes by ________________ ?

A. deforestation
B. water pollution
C. acid rain
D. forest fire

The pyramid of energy in any ecosystem is _________?

A. Always upright
B. May be upright or invented
C. Always inverted
D. Always Circle

In middle latitudes, which cloud will have the lowest base ________________________ ?

A. Cirrostratus
B. Stratocumulus
C. Altocumulus
D. Cirrus

Fatal degenerative lung disease caused by particulate asbestos is referred to as _____________?

A. asbestosis
B. asthma
C. allergy
D. sinusitis

The blueness of the sky is mainly due to _____________?

A. The scattering of sunlight by air molecules
B. The presence of water vapor
C. Absorption of blue light by the air
D. Emission of blue light by the atmosphere