The scientist who discovered the oxygen cycle in nature was: MCQ with Answer and Explanation

Explanation:
Vitamins A, D, E, and K are fat-soluble, stored in body fats and liver. Vitamin K is essential for blood clotting (synthesis of prothrombin). Vitamin B complex and vitamin C are water-soluble, excreted in urine and not stored extensively. Fat-soluble vitamins require dietary fat for absorption. Excess of fat-soluble vitamins can cause toxicity (hypervitaminosis).

Explanation:
Carnivores have well-developed, sharp, pointed canines for piercing and tearing flesh. Herbivores have reduced or absent canines, with well-developed molars for grinding. Omnivores like humans have moderate canines. Detritivores feed on detritus. Dental formula and tooth type are adaptations to diet. Dogs, cats, and lions have prominent canines.

Explanation:
Amoebic dysentery (amoebiasis) is characterized by bloody, mucus-containing stools, caused by Entamoeba histolytica, transmitted through contaminated food/water. Malaria is Plasmodium, sleeping sickness Trypanosoma, leishmaniasis Leishmania.