A scientist constructs a graph to show the age structure of the human population of Country Y. The graph is shown here.

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

Dna. we have heard that we are a product of our dna. but where is it? how do we "get" our dna? it is passed to us, from our parents, but in what form? several vocabulary words associated with inheritance are used interchangeably and sometimes, incorrectly. let's see if you can clear this up for someone just learning about inheritance and cell structure.

Which of the following is required of a new drug?me