Atype of trilobite is used as an index fossil. these fossils were made about 540 million years ago. a scientist finds a trilobite fossil in layer 5 in the diagram below. what can the scientist conclude from this finding?

One important development during the 3rd trimester that will insulate the infant against changes in temperature is a. the deposition of fat under the skin b. the closing of the septum between c. the atria of the heart d. the beginnings of lung functioning e. the beginnings of light and sound sensing

The carbon cycle is best defined as a process in which a. carbon changes from inorganic forms to organic forms and back b. carbon is changed into other elements such as oxygen or nitrogen c. carbon is continually created from the sun’s energy by plants d. carbon is consumed and regenerated from other elements such as oxygen and nitrogen

Construct at least two possible hypotheses for the student’s experiment.