William is testing what type of light best bean plants grow. he plants four beans in four separate pots. he places each pot in a different room and subjects them to different types of light., and he waters each plant the same amount. he uses sunlight, ultraviolet, fluorescent, and black light. william then measures the height and growth rate of each plant. what is the control for william’s experiment? a) sunlight b) ultraviolet c) fluorescent d) black light

Why do we perceive objects as retaining their brightness under different lighting levels?

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

Describe how a non-resistant staphylococcus aureus bacterium can produce a bacterium that is resistant to methicillin