Answer: Roots of trees need oxygen.
the most recent year for which we have statistics available, 157,423people -- 86,689 men and 70,734women -- died from lung cancer in the U.S.
Taskmasters. Land breezes occur at night and in the early morning.This winds occur when the land is cooler than the sea. This happens when the air cools in the night time (as there is less heating from the sun) it contracts
Answer:
The complement system or complement cascade is an essential part immune system that increases the ability of the immune cells such as phagocytic cells and antibodies to kill and remove foreign bodies such as microbes and removes the damaged or infected from the cells of an infected organism.
The complement system utilizes the classic pathway to destroy cell walls or membrane of antigen or microbes, however, it sometimes also use alternate pathway for certain organism
Large numbers of activated complement proteins are produced by the complement system that binds and, opsonizing microbes for internalization by phagocytes having receptors for a complement. It is important for innate defense
The correct answer is A.chemical energy in the bonds of food molecules.
The cells require a constant supply of energy to generate and maintain their functions. Sugars are most commonly used as fuel molecules (especially glucose). Food Molecules Are broken down in three stages: the first step is digestion (intestine), second is glycolysis (cytosol) and the third is the citric acid cycle together with oxidative phosphorylation (mitochondria). During the process of oxidative phosphorylation, ATP is produced.
