The three defining features of a eukaryotic cell are a membrane-bound nucleus, membrane-bound organelles, and what? A. cell wall
B. ribosomes
C. no cellular compartments
D. multiple rod-like chromosomes

The use of dna as evidence in criminal investigations became possible because of the

The table shows dates and appearance of index fossils. which rock layers can be dated most precisely? a) a layer containing both a fossil 4 and a fossil 3 b) a layer containing both a fossil 2 and a fossil 3 c) a layer containing both a fossil 1 and a fossil 4 d) a layer containing both a fossil 1 and a fossil 2

Which of the following graphs have the same wavelengths