Answer:
Chondrichthyes characteristics include a cartilaginous skeleton, lack of a swim bladder, lipid storage restricted to the liver, unique hematopoietic organs, and bacteremia in clinically normal individuals. Variable reproductive strategies are employed throughout this vertebrate class.
Explanation:
A. Because elements are made up of atoms, neither electrons nor protons
Genus and species are the two levels of classification that <span>represents the name giraffes Camelopardalis. </span>
Answer:
1 and 3
Explanation:
Magnetic waves always go from north to south. So judging by the arrows you can tell the left/yellow pole is the north one. And since that is the north one, the green/right one is the south pole.
If these animals are found in a river, it shows that the river is clean. However, some animals are adapted for surviving in polluted conditions and can survive in low oxygen concentrations. Examples are blood worms and sludge worms. The presence of these species indicates there is a high level of water pollution.
