The first class lever is the most common lever in the human body. True/False
Answer:
False
Explanation:
In first-class levers, the position of the fulcrum is between the effort and the load. In these levers such as scissors, if the effort (child) is farther from the fulcrum than the load, a heavy load can be moved. There are few first-class levers in the human body.
One of the examples of such a lever is the head resting on the vertebral column. When the head is raised, the contraction of the posterior neck muscles provides the effort and the fulcrum is formed by the joint between the atlas and the occipital bone. Third class levers are the most common types present in the human body.
Cyanobacteria also known as one of the first organism on earth are responsible for producing nearly 80% of the oxygen on earth.
Answer: As a product
Explanation:
It acts as a product, the glucose bonds are broken apart – releasing the chemical energy stored in it. Cellular respiration uses glucose and oxygen, and it makes water and carbon dioxide
Body fat percentage of over 33% is considered high for a female
A leech is an example of a parasite