Fill in the blanks 1. The layer of Earth is rich in humus.
2. Tree and other plants firmly bind the particles.
3. In the absence of trees and plants, soil becomes .
4. Percolation rate of water in soil is expressed in the unit of .
5. Excessive use of insecticides and pesticides can cause . 6. Deforestation the particles in the soil and leads to soil erosion.
7. soil is used in construction of buildings.
8. Cotton is grown in soil.
9. Ground water is formed in layer of earth.
10. Humus is formed by of organic matter.

answer, please

Which describes interactions between substances and stomata during photosynthesis? check all that apply. oxygen enters stomata. oxygen is released through stomata. carbon dioxide enters stomata. carbon dioxide is released through stomata. hydrogen enters stomata. hydrogen is released through stomata.

What approach is required to balance the objectives of sustainable development? balancing the objectives of sustainable development requires a(n) .

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.