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Three factors are required. Heat, fuel, oxygen

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What 2 factors determine the shape of a snow crystal?

gravity and acceleration due to it or a friction in air which cause its uniform velocity


What are the two main factors that cause individuals of the same species to appear different?

Genetic variation and environmental factors are the two main factors that cause individuals of the same species to appear different. Genetic variation results from differences in DNA sequences passed down through generations, while environmental factors such as diet, climate, and exposure to sunlight can also influence physical appearance.


What combinations would be needed to cause the development of dizygotic twins?

Dizygotic twins, also known as fraternal twins, result from the release and fertilization of two separate eggs by two separate sperm. Therefore, the combination needed is for a woman to release two eggs during ovulation and for both eggs to be fertilized by different sperm, leading to the development of dizygotic twins.


What is the difference between cause and correlation?

A cause implies a direct relationship between two factors where one factor results in the other. Correlation, on the other hand, refers to a relationship where two factors are observed to change together but may not have a direct cause-and-effect link. Correlation does not imply causation.


What are the two factors that are needed to support life?

Two essential factors that support life are the presence of water and suitable environmental conditions, such as temperature and atmospheric composition. Water is crucial for biochemical reactions and serves as a solvent for nutrients. Additionally, a stable climate with appropriate temperatures allows for the necessary energy exchange and metabolic processes that sustain living organisms.