How many possible genotypes and phenotypes are there for a single gene trait that shows dominance in any given population? a. one genotype, one phenotype
b. two genotypes, two phenotypes c. three genotypes, two phenotypes d. two genotypes, three phenotypes

How do living things obtain phosphorus

20 the compound al(nh3)2 has atoms of nitrogen.

The table presents the average day and night temperatures in five cities. it also reveals whether a city receives substantial rainfall (wet climate) or little rainfall (dry climate). which city’s rocks are likeliest to experience frost wedging, and why? a) city a because the consistently subzero temperature would prevent water from melting b) city b because it is a wet region and the temperature fluctuates around the freezing point c) city c because it receives plenty of rain fall and the weather is moderately cool d) city d because the hot and dry weather would cause rocks to absorb water