<span>the activity that requires the action of a first class lever in the body is: D. nodding
First class lever refer to a lever on which the resistance exist in one one side of the fulcrum and an effort is made on the other side.
Another example of a first class lever beside nodding are: Scissors, a crowbar, or a seesaw</span>
Whatever is the best option for my brother/sister. That's what I can only say because you didn't list any options.
Answer:
Girls usually begin puberty between the ages of 8 and 13 years old. The earliest sign of puberty in most girls is the development of breast "buds," nickel-sized bumps under the nipple.
Answer:the main language in Sri Lanka is Sinhala
Explanation: it originated a long time ago and has been used as main language for a long time now
