Cultures of a bacterial strain were incubated in a refrigerator (5°c), on a lab bench (22°c), in a 37°c incubator, and in a 50°c incubator. after incubation, there was no growth at 37°c and 50°c, slight growth in the refrigerator, and abundant growth on the lab bench top. which term best describes this organism?

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

Which of these is an example of land degradation? a. containers designed to store pollutants leak. b. fertilizers provide too many nutrients to crops. c. garbage is buried so the land can be reclaimed later. d. a drought kills all the plants in an area, leaving bare land

When ash and dust begin to settle on the ground, they eventually become compacted by