That's true. There is little variety among organisms found in pools, pounds and lakes. Despite that fact that many ponds are seasonal, lasting just a couple of month (for exemple sessile pools) while lakes can exist for more than hundred years. Lakes and ponds have limited species diversity because they are often limited from each other and from other water sources like rivers, seas and oceans.
Answer:
The answer in this question is show you made Sodium Hydroxide and Hydrogen Gas.
A dihybrid cross is defined as a breeding experiment involving parental generation chromosomes that have two contrasting traits. The individual organisms involved in this can be either homozygous or heterozygous.
This kind of cross pollination experiments led to the development of George Handel's Law of Independent Assortment.
Hope it helps.
For question a, Labrador retrievers vary in two loci, B and
E. Black dogs have dominant alleles at both loci (B-E-), brown dogs have bbE-,
and yellow dogs have B-ee or bbee. Since all the puppies were black, a dominant
E allele from the brown parent and they must all have inherited a dominant B
allele from the yellow parent. The yellow male must have been BBee, and the
brown female parent must have been bbEE. The black puppies were all BbEe.
For question b, simply mating yellow with yellow will produce
all yellow Labrador puppies. If at least one of the parents is homozygous EE, mating
two brown Labradors will produce either all brown puppies, or ¾ brown and ¼
yellow if both parents are heterozygous Ee.
