Answer:
Mechanical barriers — which include the skin , mucous membranes , and fluids such as tears and urine — physically block pathogens from entering the body. Chemical barriers — such as enzymes in sweat , saliva , and semen — kill pathogens on body surfaces.
Answer:
ATP, is a molecule called adenosine triphosphate.
This molecule takes part in coupled reactions:This molecule participates in a large number of biochemical reactions, this molecule is the energy contribution of reactions, it appears in the Krebs and glycolysis cycle.
This molecule is a type of nucleotide.
ATP is a nucleotide formed by three phosphate groups and an adenosine. The nucleotide is adenine with three energy-rich phosphate groups.
<span>Transpiration is considered as necessary evil because during CO2 and other gaseous exchange, water also escapes and that could be harmful to the plant.</span>
<span>You have more life in warmer areas rather than in cold areas</span>
