Food is pushed through the digestive tract by muscle contractions called
<span>peristalsis.</span>
Infectious diseases are caused by microorganisms such as viruses, bacteria, fungi or parasites and can spread between individuals.
Answer:B
Explanation:
The mechanical advantage of a 3rd class lever is always less than 1. For this class of levers, the input effort is higher than the output load, which is different from second-class levers and some first-class levers. However, the distance moved by the load is greater than the distance moved by the effort.
I believe the correct answer is A.)