Answer:
2
Explanation:
Humans need proteins, fatty acids, vitamins, and minerals
Autotrophic behaviour depends on the ability of the cell to carry out photosynthetic or aerobic respiratory metabolism, which are the only processes able to deliver sufficient energy to maintain carbon fixation. The Calvin cycle is used by bacteria to synthesize organic compounds.
A constant factor could be the dose of the drugs and the species of the rats used.
<h3>What is a constant factor?</h3>
In an experiment, a constant factor is one that is not allowed to change al through the experiment. This one must be held as the same and not allowed to vary. A constant factor could be the dose of the drugs and the species of the rats used.
The factor that would be different for the experimental group and the control group the administration of the new drug.
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Answer:
Fish is a species that has a spine. Although other species in that list have spines, fish is a representative vertebrate example when learning about them.
Explanation:
A vertebrate is a species that has a spine / multiple vertebrae.
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Answer:
cells is the one of element