What fight invading bacteria by either slowing their multiplication or destroying them?

The correct answer is- antibiotics

Explanation:

Antibiotic is the substance that is used to fight the invading bacteria by slowing down their growth or by killing them. The first antibiotic was penicillin discovered by Alexander Fleming in 1928.

Penicillin was able to control the growth of gram-positive bacteria by ceasing the transpeptidation reaction in gram-positive bacteria. By doing this penicillin stops bacteria to produce new cell wall which ultimately results in the killing of bacteria.

Different antibiotic have different targets in bacteria which allow antibiotics to destroy the invading bacteria or to slow their multiplication rate.

answer; the above is a (true) statement;

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