- Life Sciences
energy resources (coal, crude oil and natural gas) derived from the fossilised remains of plants and animals that died and were buried under sediments millions of years ago.
small structures found in the jaw that are used for biting and chewing food.
a sensation of unease and discomfort in the upper stomach with an involuntary urge to vomit. A...
birds without a keel on their breastbones and therefore unable to fly, for example ostriches....