In an aquatic ecosystem, the depth to which light penetrates is called __________?
A. aphotic
B. photic
C. euphotic
D. nonphotic
Author: Aroma Ann
The components of LPG are _____________?
A. Methane & Hexane
B. Propane & Butane
C. Ethane & Methane
D. Propane & Ethane
Fungi is/are __________?
A. single-celled prokaryotes
B. Phototrophic eukaryotes
C. Eukaryotes single-celled and primitive multi-celled organisms
D. heterotrophic eukaryotes
Algal bloom results in __________?
A. Global warming
B. Salination
C. Eutrophication
D. Biomagnification
The primary source of energy for the earth’s atmosphere is __________?
A. Energy from within the earth
B. The sun
C. Erupting volcanoes
D. Lightning discharges associated with thunderstorms
E. Latent heat released during the formation of hurricanes
Continue reading “The primary source of energy for the earth’s atmosphere is __________?”
Which tree is known as Coral tree?
A. Quercus
B. Dipterocarps
C. Erythrina
D. Zizypus
Which among the following result in the formation of soil?
A. Radiation
B. Weathering
C. Erosion
D. Pollution
Continue reading “Which among the following result in the formation of soil?”
Biogas is composed of __________?
A. methane, carbon dioxide, nitrogen and hydrogen
B. carbon dioxide, nitrogen and hydrogen
C. ethane, carbon dioxide, nitrogen and hydrogen
D. methane, carbon dioxide, nitrogen and sulphur
First Biosphere reserve in India in __________?
A. Nilgiri
B. Agastyamala
C. Eravikulam
D. Chinnar
Continue reading “First Biosphere reserve in India in __________?”
Two opposite forces operate in the growth and development of every population. One of them is related to the ability to reproduce at a given rate. The force opposite to it is called __________?
A. fecundity
B. mortality
C. environmental resistances
D. biotic control
