Trilobites are extinct marine invertebrates. Scientists found a trilobite fossil in layer 5, shown here. Fossils in which layer are likely to be slightly older than
this trilobite fossil?
A. 13
B. 7
C. 4
D. 6

Analyze the central conflict and its in a story to discover the theme. o resolution o protagonist antagonist character

Coral reefs support more species per unit area than any other marine environment on earth. what is one way coral reefs are important to the health of the biosphere

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change