To test acidity levels of water, scientists test its ph. as acid rain falls, the ph levels in lakes and streams decreases. candice is working on a project to determine whether acid rain is lowering the numbers of bass and mayflies in a lake. the ph of a water sample to be 54. she concludes that the lake's ph level is causing a decrease in the numbers of bass mayflies present there. how would you respond to candice's conclusion, based on the data in the graph?

Where do the respiratory and circulatory systems meet? a. in the heart b. in the muscles c. in the lungs d. in the brain

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

The combining form leuk/o means red true or false