Organ systems are made up of tissues which are made up of cells.
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Algae and nitrogen-fixing bacteria are photosynthetic organisms.
Answer:
The air tends to move from high pressure to low pressure
Answer: D. Galaxies show a red shift, indicating they are moving away from each other.
Explanation:
Galaxies seem to show a red shift which indicates that the galaxies are moving away from each other. This provides evidence for the Big Bang theory because the theory posits galaxies will keep moving away from each other.
This is because when an explosion happens, matter moves away from the point where the explosion happened. If the Big Bang happened therefore, galaxies will move away from the source which is why galaxies are moving away from each other.
The breaking down of food in the mouth is the first step of the digestive process, It’s important because the food gets broken down into a form that can be absorbed and used.
