The first known bird fossils date to which era of time ?
A. Triassic
B. Cambrian
C. Permian
D. Jurassic

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.

Which part of cellular respiration must occur before any of the other steps can occur

What conclusion can be made based on the temperature of soil when the light hits the soil at 0°, 45°, and 90° angles in section 2 of the experiment? did your results support your hypothesis? why or why not?