Answer: Option A.
Sympatric speciation
Explanation:
Sympatric speciation is a reproductive isolation or evolution of groups of species from the main population in the same geographical location.
The fruit flies changes their host plant to another due to specific characteristics posses by the choice host plant. It is a sympatric speciation because they occur in the same geographical location.
Based on the graphs, the environment must have favoured, by natural selection, the birds with larger beaks because the species of birds have evolved to have larger beaks.
The eradication of insects by disease must have cause starvation to the small-beaked birds hence causing their demise. In addition, the insects no longer compete for fruits with the large-beaked birds. The plentiful fruits lead to the growth of large beaked birds in the population.
Explanation:
Natural selection fits a population with its environment by favouring individuals with advantageous traits. These individuals outcompete the others for resources and stand greater chances for reaching maturity and passing down their genes to the subsequent generation. This is how species evolve with enviromental changes.
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Explanation:
The definition of a spring tide is a flood or rising of water especially during a new or full moon. ... A tide in which the difference between high and low tide is the greatest. Spring tides occur when the Moon is either new or full, and the Sun, the Moon, and the Earth are aligned.
Waves are additive so when the gravitational pull of both bodies is in the same direction the high tides add and the low tides add (Figure below). Highs are higher and lows are lower than at other times through the month. These more extreme tides, with a greater tidal range, are called spring tides.
Answer: they can be either dominant or recessive
Explanation: due to the effects of one Gene are usually inherited in a simple mendelian pattern.
Autotrophs make their own food from the sun so most energy starts there