Because, photoautotrophs serves as their carbon sources.
Chemoheterotrophic bacteria are those bacteria that are incapable of producing their own food, they depend on photoautotrophs, which are capable of making their own food by trapping energy from the sun. Thus, photoautotrophs serves as source of food for the chemoheterotrophic bacteria.
The correct answer is a law
Laws explain what occurs, not why it occurs. This is a law because it states that a limp stalk of celery will become crisp if put into ice water. There is no explanation why or how it occurs, only that it will happen.
Fertilization takes place in the fallopian tube
Trees can be made again . Water is a natural resource fuel is too . Wind
DNA helicase - unzips the DNA double helix
DNA Polymerase - edits genes to ensure there are no errors, a 'proofreading system'.
DNA ligase - joins all the DNA together