Ateacher set up a demonstration with 5 fermentation flasks filled with the solutions listed below. she added 10 ml of yeast solution to each flask, and students observed the flasks every 10 minutes for the rest of the class period.
what solution did the teacher most likely add to flask 1 to create a valid experiment?

Which of the following is a common danger of commercial fishing?

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.

In the diagram below, the northern hemisphere would be in what season at position a a. fall b. winter c. summer d. spring