Answer:
This is an example of directional selection.
Explanation:
Directional selection is a type of positive selection where the evolutionary fitness of one genotype is higher compared to the other ones, thereby favoring the selection of one particular phenotype and shifting allele frequencies towards the selected genotype. In a biological context, the directional selection increases the chances for surviving and for reproducing in those organisms that have the alleles favored by this type of selection. Thus, the directional selection produces the loss of genetic variability and leads to the fixation of the dominant alleles.
Answer:
Option 4, Organisms in level D are heterotrophic.
Explanation:
Generally in a energy level or trophic level system, organisms are arranged on a pyramid scale in such a way that organism lying at the level A or the base of the pyramid are producers. They obtain energy from the sun and produce food for other organisms. Organism in level B is a herbivore which feed upon the plants to gain food and energy. In level C organisms that feed upon herbivores i.e the carnivores lies. At level D lies the microorganisms that feed upon dead remains of high order animals and plants. Hence, organisms at level D are called heterotrophs.
Thus, option 4 is correct
Answer:
The air
Explanation:
The air spreads it around the room
Egg cel :) because egg cells are used to produce offspring.
Answer:
that looks complicated
Explanation:
please do not answer other's question if you don't know the answer
