7th Class Science Full Book Online Test 05

light-travels-the-fastest-through_-_vacuum,major-sources-of-water-pollution-are_-_three,most-flowers-have_-_four-main-parts,most-grasses-depend-upon-it-for-their-pollination_-_wind,most-of-the-changes-in-materials-are-of_-_two-main-types,number-of-chambers-in-our-heart-is_-_four,number-of-sperms-present-in-pollen-tube_-_two,objective-that-vibrate-slowly-have-pitch-that-is_-_low,organisms-of-the-same-kind-living-and-reporoducing-in-particular-area-is-called_-_population,organisms-that-make-their-own-food-are-called_-_autotrophs,our-neighbouring-galaxy-is-named-as_-_andromeda,oxygenated-blood-from-the-body-enters-the_-_right-atrium