Whats the difference between a prokaryote and a eukaryote?

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What is a simple sugar?

Choose the best description of an umbra. A. Ring of light around an opaque object B. A partial shadow C. The darkest part of a shadow D. An opaque object

Which of the following best explains the production of large amounts of the amino acid glycine betaine by Survivor plants? A. They have a random mutation in their genome. B. They have been genetically engineered by humans. C.

The number of organisms in a food pyramid decrease as the trophic level A) decreases. B) increases. C) stays constant. D) changes unpredictably.

Maria and her brother like to go fishing at the lake on Saturdays. They wondered if fish were more likely to bite at one time of day than another.

How do energy conversions make a car go down the street? A. The stored energy of the gasoline is converted to heat, and then to the stored energy of the car. B.

Describe how a flu vaccine the human body?

Adults do not need foods from the dairy group, only growing children and athletes do.

The principle role for sugars in living things is to

Under which condition is competition among fish most likely