Nuris is writing a paper on the scientist who first named cells after studying cork under a microscope. who is her paper about? 1) virchow 2)schwann3) hooke 4)leeuwenhoek

Which list is in order from simplest to most complex? a bacteria - virus - plant - protist b protist - bacteria - virus - plant c virus - bacteria - plant - protist d virus - bacteria - protist - plant

1. in what ways have non-native species been beneficial? 2. what are some of the hypotheses for the collapse of honeybee colonies? 3. distinguish between regional and functional extinction. 4. why is it difficult to measure background extinction rates? 5. what three factors are most important in causing extinction rates to climb?

Earth is tilted on its axis. which of these would not exist if earth had no tilt?