Straight chain, branched chain, and ring
Answer:
Osmosis and for respiration
Explanation:
6860m
1km = 1000m
6.86km = 6.86 × 1000m
= 6860m
1 - D- Transport oxygen-rich blood to the body
2- D- Common Beetle
3- D- Protects the brain from injury
4- D- Attach Bones to muscles and bones to bones.
