Biology
N2 content is kept constant in the biosphere due to

N2 fixation
nitrogen cycle
absorption of N2
industrial pollution

ANSWER DOWNLOAD EXAMIANS APP

Biology
One day you wake with a sore throat and a runny nose. Your doctor takes a swab from your throat, sends it to a lab, and telephones you the next day to say that antibiotic will not help you get better. Which of the following is the most likely reason for the doctor's statement?

Having waited a day, it is too late to take an antibiotic
You are infected by a virus
You need to be vaccinated instead of taking an antibiotic
You need an antiseptic, not an antibiotic

ANSWER DOWNLOAD EXAMIANS APP