producers take energy from the sun and transform it into organic molecules rich in carbohydrates, lipids and sugars. Producers in aquatic ecosystems are algae and in terrestrial ecosystems plants.
Lamprey and hagfish are jawless fish, with skeletons composed of cartilage. They do not have scales and are considered primitive fish. They are in the superclass cyclosystoma.
Life would be very hard because then they may not be able to survive <span />
