Which of the following is a characteristic of an index fossil? A.
The fossil is found only in an isolated part of the world.
B.
The fossil organism must have lived during a long span of Earth's history.
C.
The fossil must be found in great numbers.
D.
The fossil must look like many other fossils.

What is the importantence of the carbon and nitretan cycles in the environment

The fascicles of the deltoid are ; the fascicles of the pectoralis parallel; bipennate fusiform; unipennate multipennate; triangular bipennate; fusiform

(6.02 mc)what affect do marine protected areas have on environmental quality? they increase environmental quality by preventing resource overuse. they increase environmental quality by adding new species. they decrease environmental quality by removing all human activity. they decrease environmental quality by adding recycling facilities.