Which of these statements is true? * 4 points Doctors have not yet come up with an antibiotic that can kill harmful bacteria. Antibiotics can no longer kill any harmful bacteria because of resistance. Antibiotics are completely effective at killing all harmful bacteria. Some bacteria can become resistant to some antibiotics.

i think it is the 3rd one

Explanation:

hope this helped!

p.s it would be cool if you gave me brainliest.

c. emergency contraception

explanation:

used for after unprotected intercourse

these are common warning signs of overtraining syndrome:

washed-out feeling, tired, drained, lack of energy

mild leg soreness, general aches, and pains

pain in muscles and joints

sudden drop in performance

insomnia

headaches

decreased immunity (increased number of colds, and sore throats)

decrease in training capacity/intensity

moodiness and irritability

depression

loss of enthusiasm for the sport

decreased appetite

increased incidence of injuries.

a compulsive need to exercise