Which of the following describes the role of nitrifying bacteria?
A. converts nitrogen into a usable form for plants
B. accesses free nitrogen from the atmosphere
C. is a building block of nucleic acids

Mario performed an experiment to determine if photosynthesis was affected by the amount of light that a plant received. what could he have done to increase the validity of his data? reduce the number of plants. remove the 1 hour group. add a 0 hours control. measure the oxygen in liters

Convert 9.75 millimeters to centimeters.centimeters

Iguanas need to live in a habitat that is very warm, so the pet store warms their enclosures with "basking lights" which act as an artificial sun. describe how the three methods of thermal energy transfer may take place within the iguana's enclosure.