Their characteristics are their massive size. White dwarfs are smaller and generally hotter. The sun is medium size and cooler than white dwarfs; it has a relatively medium temperature. That star would be classified as a white dwarf because if its small size and massive temperature. That star would be a supergiant. Just put an x on it, mate.
D. so the exchange of gases and nutrients can happen
Answer:
a There is probably life on Mars.
Explanation:
A scientific theory is basically an opinion that has not been proved or disproved yet.
All of the other options are true science-backed facts.
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Answer:
D. It provides a way to increase the
frequency of beneficial traits in a
population.
Explanation:
Artificial selection is a selection made by the human intervention. Artificial selection is better than natural selection because in natural selection organisms mate naturally with each other while in artificial selection, human selects good traits organisms to mate with each other and produce offspring which has better characteristics than parents.
Answer:
Steel
Explanation:
During the second industrial revolution,which building because one of the most important in the world? <em>rail</em><em> </em><em>roads</em><em> </em><em>made</em><em> </em><em>resources</em><em> </em><em>and</em><em> </em><em>products</em><em> </em><em>easier</em><em> </em><em>to</em><em> </em><em>transport</em>
