Physical movement increases to the brain, children think well and focus better. a. blood flow b. carbon dioxide c. vitamin c d. antioxidants

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

the darker peppered moth species were favored due to the fact that the industrial revolution had made all the nearby trees a darker color instead of white.

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.