<span>In esophagus the stratified squamos epithelium acts for protection and lubrication during food intake. It is structured to act like a mucous layer. Normal stratified squamos epithelium are of flattened epithelial cells upon a basl membrane. It provides protection against friction, microbial invasion etc.</span>
The correct answer is : Its risks outweighed the benefits.
The DDT is an colorless, tasteless chemical compound which was originally developed as an insecticide.
DDT was used during second world war to control malaria among the troops and the civilians.
Later, it was used as pesticide in agricultural and household practices. Due to its excessive use it entered into the food chain and its amount in the food crossed the permissible level.
So, it was banned by United States.
Characteristics of life , Water cycle, Biotic and Abiotic factors, Food chain , levels of organization.
The tube that connects the mouth to the stomach.
Correct answer: 1 calorie.
By definition, the amount of energy that passes from a lower level to the next higher level on a food chain is about 10% of that that was at that level. So, if there are 1000 calories in an autotroph level, the next level, primary consumers, will get 100 calories from it, the secondary consumers, 10 calories, and the tertiary consumers, 1 calorie.