Due to human demand because of its importance to life, the earth's most precious resource is
a. soil. b. saltwater. c. freshwater. d. oil.

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.

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?