which of hte following would be an example of an uncontrolled experiment?

the effect of water on different metals in a lab.

the effect of salt and water being mixed at different temperatures.

the effect of heat on a plants growth.

the effect of the jet streams on weather conditions.

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.

How water is moving through the ecosystem ?

Across of blue x blue (both heterozygous) would result in