Amedical researcher experimented with the effects of calcium intake on the healing time of broken bones. people who had similar broken bone injuries were divided randomly into two groups, one of which received a calcium supplement and one of which received a placebo. the data showed that there was no significant difference in healing times between the two groups, so the researcher concluded that calcium intake has no effect on bone healing time. why is the conclusion of the researcher not justified?

Select all the true statements about the cosmic microwave background radiation

In the practice of science, this type of reasoning is used to develop explanations.

Ineed to get this test done which of the following statements is correct in hour our immune system responds to a potential pathogen? a.) the skin will be the first line of defense, and then the many phagocytes in the bloodstream will attempt to consume the possible pathogen. b.) b cells will start reading the antigen code immediately and call t cells to assist in destroying the pathogen. c.) the adapted immune system will call on the innate immune system to destroy the pathogen. d.) the t-cells in the adapted immune systems are the first to recognize the pathogen