The visual examination of the abdominal cavity through the belly wall is called:

The chemical form of energy that is useable by the cell to do work

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

Astudent poured a solution of bromothymol blue indicator into three test tubes. then he placed an aquatic plant in two of the test tubes, as shown below. he placed a stopper on each test tube and placed them all in the dark for 24 hours. bromothymol blue turns from blue to yellow in the presence of co2