Which statement best describes the effect of the low density of frozen water in a lake? water in the lake freezes from the bottom up, killing all organisms. water removes thermal energy from surrounding land, causing the land to freeze. water freezing contracts the water and causes levels to decrease. water freezing on the top floats and provides insulation to the organisms living below.

Why does miranda have that particular vision of dr hildesheim answer?

Group control group #1 experimental group yes yes yes control group #2 no new drug orange juice bed rest no yes no yes ves which of the following is the best explanation of why a second control group was included in this experiment? o a. to provide the volunteers in the study with something to drink o b. to prove that the common cold cannot be cured c. to confuse anyone who is trying to steal their new drug and sell it as their own invention o d. to researchers conclude that results are related to the new drug and not to the orange juice submit e previous

Nucleic acids offer variability because they contain alternate forms of genes called .