The smallest particle of any type of matter would be an Atom
<span>The correct answer is b. The open ocean. The definition of an island ecosystem does not have anything to do with water, but simply refers to an ecosystem that exists as a microcosm within a far larger, separate ecosystem. The ocean has lots of separate island ecosystems within it, but it itself cannot be referred to as one.</span>
The parent's genotypes are

and

respectively. When crossed together, all possible genotypes can be expressed. 1/4 AB blood, 1/4 A blood (heterozygous), 1/4 B blood (heterozygous) and 1/4 O blood. A Punnett square has been uploaded to support this.
The answer would be H. Dominant because the trait that’s being expressed is considered the dominant trait, hope this helps :)
I'm pretty sire the answer to this would be
c. <span>add new genes to the gene pool </span>