Can anyone give me an example for hydrotropism?

People who exercise for an hour may have lower cholesterol levels. is that a statement? a law? or a hypothesis?

In a population that is in hardy-weinberg equilibrium, there are two possible alleles for a certain gene, a and a. if the frequency of allele a is 0.4, what fraction of the population is heterozygous? a. 0.40 b. 0.60 c. 0.16 d. 0.48

When a plant is placed in pure distilled water its cell will