Which of the following statements are true for all biomolecules?
Select three correct answers.
They have nitrogen elements.
They have covalent bonds.
They have a carbon backbone.
They have hydrogen elements

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.