Annelids have closed circulatory system
Tropism
It is a biological phenomenon, indicating growth or turning movement of a biological organism. This is usually a plant in response to the environmental stimulus. This response is dependent on the direction of the stimulus. The stimulus must be perceived first, followed by movement towards or away to the stimulus. There are various types of tropism which are chemotropism, exotropism, geotropism and electrotropism.
A situation where friction would be desirable is rubbing your hands together to make them warm in the winter time.
Answer:
Mitosis is when a diploid cell becomes 2 haploid cells with single chromosomes
Explanation:
Photosynthesis gives out oxygen and takes in carbon dioxide
Aerobic respiration uses the oxygen and gives out carbon dioxide
-Making a cycle
(Without the respiration the cell would die which would stop photosynthesis)
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