One of the major differences between the first and second line of defense is that a. the first line defenses are anatomical barriers whereas the second line defenses are mechanisms.
b. the first line defenses involve complement proteins whereas the second line defenses involve antibodies.
c. the first line defenses involve the respiratory tract whereas the second line defenses involve the gastrointestinal tract.
d. the first line defenses are mechanisms whereas the second line defenses are physical barriers to infection.

children tend to take more after their grandparents more than their parents. it’s the dna you received that was passed down to you somewhere in your family. maybe one of your grandparents had/has straight hair and you might have gotten it from them.

idk im sorry.

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.

the energy generated by an individual's metabolism is calculated in met (metabolic equivalent of task). the met is the ratio of the work metabolic rate to the resting metabolic rate. one met is illustrated as 1 kcal per kilogram per hour, and is probably equal to the energy cost of sitting quietly.

1 met is equal to 1.162 watt per kg

1 kg is equal to 1000 grams

as the person weighs 80000 gm, that is, 80 kg.

therefore, 80*1.162 = 92.96

thus, the person expends 92.96 watts of power while at rest.