This is the foundation for dna replication, the rule that states the pure adenine (a) always pairs with the pyrimidine thymine (t) and the pyrimidine (c) always pairs with the purine guanine (g)?

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

How dose plate tectonics effect climate

Matched chromosomes carrying information about the same characteristics in the organism are called