What is the name of the enzyme that separates the two strands of dna during replication?

Crossing over is a method of (blank)?

Which process takes place last in the human being which process takes place last in the development of a human being

What is one affect on the australian environment due to the introduction of non-native european rabbits? (a) more grass grew in response to the need of the growing population of rabbits. (b) the rabbits balance out the food chain as they became a natural prey to many predators. (c) the rabbits the land by digging, which caused the soil to spread much needed nutrients. (d) the rabbits out-competed other small animals species and caused them to go extinct.