Which of the following is an appropriate problem statement for a science experiment?

a. what is the effect of microplastic on the digestion processes of small fish?
b. the effect of microplastic on the gut of small fish is unknown to humans.
c. what is microplastic?
d. microplastic causes problems for coral reefs and we want to know exactly what problems are caused.

Astudent reads the following text in a science book: scientific evidence tells us that the cause of earths four seasons is the tilt of earth as it revolves around the sound the student is instructed to illustrate this information in a science book. how will the student illustrate winter in the northern hemisphere? a.earths northern hemisphere will tilt away from the sun. b. earths northern hemisphere will tilt toward the sun. c.earths orbit will be farther away than from the sun d. earths southern hemisphere will tilt away from the sun.

What is the cause hearing loss in human being

Which is not a characteristic of bacteria? a. they are unicellular. b. they are prokaryotic. c. they are the smallest form of life on earth. d. they are multicellular.