Question

The average percentage of oxygen in air is
1. Which of these is not an air
pollutant(a)noiseb)smokercisewa
1. The major salt cor ponents in marine water are salts of adi
12. Wind speed is measured with
(a)anemometer(b)baron
13. Which of the following is not an element of weather(a)turbi
1. The part of the biosphere that is solid is. (a)atmosp
45. The abiotic effect of soil is called
Factor(a)clima
Which these gives rigidity and support to plant,
Rock degradation will lead to
Formation(a)
48. Non-reactive component of air can be
.(a)ox)
19. Topography and relief are otherwise called
(a)sk
50. In a 200cm of air calculate the volume of air if after pa
left(a) 20cm (b) 49cm (c) 50cm' (d) 60cm
51. Sand bed helps to serve as
de distillation
Ra bed use that serve as adsorbent medium in
Medium in wat
Selcromagnetic ray that causesthe following is not an element of weather of the ​

Answer 1

Answer:

b .noise I think I cannot understand the whole question

Answer 2

Answer:

21 percent of oxygen in air.

12.anemometer.

1.lithosphere is the part of the biosphere which is solid