Agroup of scientists wants to test the effects of increased salinity on a population of catfish in a river. what result from this experiment would confirm that natural selection is a process that can drive evolution?

Select the correct answer. in the image, if the washcloth represents consumed food, which organ of the digestive system correctly represents the action performed by the hands? hands squeezing water from a washcloth a. esophagus b. large intestine c. liver d. mouth

Which part of cellular respiration must occur before any of the other steps can occur

Which of the following is an effect of the uneven heating of the earth by the sun? a sea breeze a land breeze a convection current all of the above