Best Answer: The symptoms of lactose intolerance can manifest anywhere from 30 minutes to 2 hours after ingestion of lactose containing food. The symptoms can last up to 3 days following ingestion. Although the severity of symptoms vary with each individual, here are the most common reactions: -Abdominal discomfort.
For the number of different kinds of animals, or species, is higher than youâd ever imagine. The class of animals that human beings belong to, the mammals, includes close to 5,000 species. The number of birds is over 15,000. There are more than 3,000 kinds of snakes, and 300 kinds of turtles.
Mammals are the vertebrates within the class Mammalia, a clade of endothermic amniotes distinguished from reptiles by the possession of a neocortex, hair, three middle ear bones, and mammary glands. Females of all mammal species nurse their young with milk, secreted from the mammary glands. Mammals include the largest animal on the planet, the blue whale. The basic body type is a terrestrial quadruped, but some mammals are adapted for life at sea, in the air, in trees, underground or on two legs