Answer:
Natural selection and selective breeding can both cause changes in animals and plants. The difference between the two is that natural selection happens naturally, but selective breeding only occurs when humans intervene. For this reason selective breeding is sometimes called artificial selection.
Explanation:
Smaller teeth and jaws are due to genetic variation, which occurred by mutations (errors in DNA replication) and were selected to fill a suitable niche.
<h3>What is evolution?</h3>
Evolution is the mechanism of change of one species to adapt given environment, whereas mutations are the raw material for evolution.
In this regard, scientific evidence supports the fact that jaws evolved to become shorter in humans and thus adapt to a pastoral lifestyle.
In conclusion, smaller teeth and jaws emerged by mutations and were selected to fill a suitable niche.
Learn more about human evolution here:
brainly.com/question/26502157
#SPJ1
Answer:
smog
Explanation:
Photochemical smog is a mixture of pollutants that are formed when nitrogen oxides and volatile organic compounds (VOCs) react to sunlight, creating a brown haze above cities.
Answer:
the production of carbon dioxides when soil organisms breathe.
Explanation:
soil or cellular respiration is a key ecosystem process that releases carbon from the soil in the form of CO 2.
