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Lipids are broken down by digestion. What are the products produced by this process?

rungs of DNA (middle part of DNA) is made of

The algae at the beginning of the food chain are called what?

Each trophic level of food pyramid represents a different amount of biomass. Which is the largest?

All viruses have protein coat also known as

What characteristic of life do viruses have?

For an organism to be considered fit, or successful, it must be able to do what?

What is the molecule responsible for heredity?