I think it’s number 2 but I could be wrong, I know 1,3, and maybe 4 are in living things
Answer:
D.) HOCOOH
Explanation:
Structural formulas identify where the atoms/bonds within a molecule are located. Therefore, the atoms need to be listed in order of appearance (left to right). This makes the best answer D.) HOCOOH.
Answer:
Articular articular cartilage is very important part of the long bone structure. It is present between the bones at the joints and help in reducing the friction between the joints. the epiphytes is data present at the end of the long bones are usually have a covering of the articular cartilage and it has a very thin layer of cartilage that helps in reducing the friction .
It also act as a shock absorber between the two bones and helps in the transmission of force from one phone to another and divide the force across the skeletal system. It also transmit the force on the bones with low fictional coefficient. The articular cartilage are very susceptible and prone to the injury and it lacks blood vessels and nerves. Articular cartilage is made up of hyaline cartilage and is made up of densely packed extracellular matrix which certain type of specialised cells known as chondrocytes. It is also made up of water , collagen , proteoglycans and glycoproteins .
I’m pretty sure the answer is A but if you already ruled that out try B
