Which of the following is not properly matched?
Which of the following is not properly matched?
- A
Formaldehyde - Carcinogenic
- B
Sulphur dioxide - Respiratory problems
- C
Nitrogen oxide - Brown air
- D
Mean annual temperature of earth - $25^{\circ} C$
Similar Questions
Study the four statements $(i-iv)$ given below and select the two correct ones out of them.
$(i)$ A lion eating a deer and a sparrow feeding on grains are ecologically similar in being consumers.
$(ii)$ Predator star fish Pisaster helps in maintaining species diversity of some invertebrates.
$(iii)$ Predators ultimately lead to the extinction of prey species.
$(iv)$ Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders.
The two correct statements are
Study the four statements $(i-iv)$ given below and select the two correct ones out of them.
$(i)$ A lion eating a deer and a sparrow feeding on grains are ecologically similar in being consumers.
$(ii)$ Predator star fish Pisaster helps in maintaining species diversity of some invertebrates.
$(iii)$ Predators ultimately lead to the extinction of prey species.
$(iv)$ Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders.
The two correct statements are
- [AIPMT 2010]
Assertion : In tropical rain forests. $O-$ horizon and $A-$ Horizon of soil profile are shallow and nutrient-poor.
Reason : Excessive growth of micro-organisms in the soil depletes its organic content
Assertion : In tropical rain forests. $O-$ horizon and $A-$ Horizon of soil profile are shallow and nutrient-poor.
Reason : Excessive growth of micro-organisms in the soil depletes its organic content
- [AIIMS 2006]
The percentage of forest cover recommended by the national forest policy $(1988)$ is
The percentage of forest cover recommended by the national forest policy $(1988)$ is
A population characteristic of a species susceptible to extinction is
A population characteristic of a species susceptible to extinction is
As estimated by Robert May, what is total number of species present on earth?
As estimated by Robert May, what is total number of species present on earth?