A) 20j B) 10j C) 40j D) 30j
A) Mars B) Mercury C) Jupiter D) Saturn
A) all of the above B) stars and galaxies C) planets and moon D) energy and power
A) soil erosion B) rainfall C) farming D) bush burning
A) conducting, convection and radiation B) evaporation, condensation and precipitation C) All of the above D) transportation, transpiration and evaporation
A) electromagnetic radio B) electrical magnet radio C) electromagnetic radiation D) electronic management radiation
A) planting of cover crops B) deforestation C) mulching D) avoid overgrazing
A) 79% B) 78% C) 77% D) 76%
A) nitrogen cycle B) oxygen cycle C) carbon cycle D) water cycle
A) harvesting B) conversation C) collection D) collation
A) liquid B) water C) fuel D) air
A) primary and secondary hardness B) tertiary and primary hardness C) permanent and temporary hardness D) stable and unstable hardness
A) none of the above B) two pure substances C) pure substance D) impure substance
A) all of the above B) chemical test C) homogeneity D) melting and boiling points
A) potential of helium B) potential of hydrogen oxide C) potential of hydrogen D) potential of hydrogen peroxide
A) filtration B) fluoridation C) coagulation D) ammoniation
A) ammoniation B) lime treatment C) transpiration D) chlorination
A) destroy soil structure B) loss soil fertility C) maintains soil texture D) lead to collapse of buildin
A) 20j B) 40j C) 30j D) 10j
A) joules B) meter C) seconds D) newton |