Chemical reactions cannot be observed directly because molecules are too small to be seen using your eyes or a microscope. Scientists use evidence to infer that a chemical reaction has occurred. Which evidence does not indicate that a chemical reaction has occurred?​

Which direction does the energy flow in this energy pyramid ?

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

What would most likely happen to a unicellular organism if it was exposed to a hypotonic solution for an extended period of time?