. It is known in a pharmacological experiment that rats fed with a particular diet over a certain period gain an weight gain of 43 gms with variance 7 gms2 . Test the hypothesis that the new diet is an improvement assuming normality?

Are the earth's ocean floor and continents the same age geologically? why or why not?

Which description shows competition in an environment? an organism that feeds on some food an organism that finds a place to sleep three organisms of the same species living in an area three organisms battling over limited resources

What contributes to the high level of biodiversity found in wetlands? a. the large amount of available organic matter to organisms that are food for larger organisms b. the amount of available water for organism use c. the high nutrient availability d. all of the above select the best answer from the choices provided a b c d