Which statement regarding the properties of water is(are) correct?
1.water is less dense in its solid state than in its liquid state.
2.water is less dense in its liquid state than in its solid state
3.water is less dense in its liquid state than in its gaseous state.
i only
i and ii
ii and iii
i, ii and iii

The activity of the modern sample is 1.10 bq . how long does that measurement take?

Biology students used raw eggs in an experiment on tonicity and osmosis. the students put their eggs into vinegar to remove the shells. the vinegar was used to remove the shell from the raw egg. what other effect(s) did the vinegar have on the egg?

Every time there is a full moon, mrs. cook insists that students in her classes display strange behavior. what would be the best way for her to prove the validity of her theory? a. keep a journal of student behavior during different phases of the moon cycle b. research data to find concrete evidence of a link between the moon cycle and human behavior c. ask students to keep a journal of how they are feeling during different phases of the moon cycle d. survey other teachers in the building to see if they notice similar behaviors during the full moon