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.
The way of life of mammals is much different from that of an amphibian. However, among too many factors, this article intends to discuss the most important differences between a mammal and an amphibian. Mammals. Mammals (Class: Mammalia) are one of the warm-blooded vertebrates other than the birds. They are the most developed and evolved animals and the Class: Mammalia includes more than 4250 extant species.