Phenotype is the physical appearance
Genotype is the traits in letters.
lets say green eyes...
having the gene GG, Gg, except gg will yield green eyes
so, if you see someone with green eyes, he/she must either have two dominant trait or 1 dominant and 1 recessive trait. Since you gave to us that an organism expresses a recessive phenotype, you can automatically tell that the person will have 1 dominant and 1 recessive, or Gg.
However, if that is not given, you wont be able to tell the genotype based on looking at a person.
It’s D: it becomes thinner and increases the size of aircells
Answer:
This in effect increased the world's carrying capacity and allowed population to grow exponentially. Since 1963, however, the ratio between energy increases and population growth has narrowed. This change could restrict future population growth.
Not necessarily the food chain may change for some animals because they eat that one species