Sirius b was an important star in ancient egypt and was used to warn for floods on the nile river. is sirius b brighter or dimmer than the sun? * a) brighter* b) dimmer

What controls activities within a eukaryotic cell?

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area

What is any method of measuring the age of an object or event in years, such as using atomic half-life?