. 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?

Which of these statements best describes the st. lawrence seaway? the st. lawrence seaway connects the st. lawrence river with the arctic ocean. the st. lawrence seaway provides an important trading route between the u. s. and mexico. the st. lawrence seaway provides an important trading route for the u. s, but has little value for canada. the st. lawrence seaway connects the great lakes, the st. lawrence river, and the atlantic ocean.

Which type of organism is missing from the food web seen in the illustration? primary consumers decomposers primary producers secondary consumers

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine