When were Earth’s landmasses first recognizable as the continents we know today? A.10 million years ago
B.135 million years ago
C.180 million years ago
D.300 million years ago

What are tissues? a groups of tissues that work together b basic units of structure and function c groups of cells that perform the same function d multiple organs that perform a major function

Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating

Greenthe fossil record is the history of life recorded byhuman observationgod.climatologists.remains of the past.