Which one of the flowing is the correct percentage of the two (out of the total of 4 ) green-house gases that contribute to the total global warming?
CFC 14%, CH4 20%
CO2 40% CFCs 30%
N2O 6%, CO2 86%
N2O 6%, CO2 86%
A.
CFC 14%, CH4 20%
The gases, which are transparent to solar radiation but retain and partially reflect back long wave heat radiations are called greenhouse gases. Recently, the concentration of green -house effect that is resulting in increases the mean global temperature. It is called global warming. The various greenhouse gases are CO2 (warming effect 60%) CH4 (20%)<CFC (14%) and nitrous oxide - N2O (6%)
Ascaris is characterised by
the absence of true coelom but the presence of metamerism
the presence of neither true coelom nor metamerism
the presence of true coelom but the absence of metamerism
the presence of true coelom but the absence of metamerism
Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?
They were able to reproduce
They could separate combinations of molecules from the surroundings
They were partially isolated from the surroundings
They were partially isolated from the surroundings
Given below is a diagrammatic cross section of a single loop of the human cochlea.
diagram
Which one of the following options correctly represents the names of three parts?
C :Endolymph
D : Sensory hair cells
A: Serum
D: Sensory hair cells
A: Endolymph
B: Tectorial membrane
D: Sensory hair cells
A: Endolymph
B: Tectorial membrane
Consider the following four statement (A-D) about certain desert animals such as kangaroo rat
A) they have a dark colour and high rate of reproduction and excrete solid urine.
B) they do not drink water, breathe at a slow rate of conserve water and have their body covered with thick hairs.
C) they feed on dry seeds and do not require drinking water.
D) they excrete very concentrated urine and do not use water to regulate body temperature.
Which two of above statement for such animals are true?
C and D
B and C
C and A
C and A
World summit on sustainable development (2002) was held in
Brazil
Sweden
Argentina
Argentina
Quercus species are the dominant component in
temperature deciduous forests
alpine forests
scrub forests
tropical rain forests
