Answer: The total mass of plants combined is way more then the mass of animals. Animals cannot make their own food so they must eat plants and/or other animals.
Answer:
The correct answer is option D. "A single origin of the low plating gene in the oceanic population that remained at a low frequency until lakes were colonized. Then the gene independently became fixed in each".
Explanation:
In this example, the adaptation of low platting in Stickleback fish made difficult to establish a clade based on the gene responsible of this trait, because the analysis with other genes suggest that the genes evolved independently. The scientists resolved the contradictory gene trees by suggesting the existence of a single origin of the low plating gene in the oceanic population that remained at a low frequency until lakes were colonized. Then the gene independently became fixed in each. This explains why the fish share the gene, and gives a coherent explanation of how an external factor (colonization) affected the genetic linage of this trait.
Answer:
D. Unequal heating of Earth by the Sun
Explanation:
Uneven heat causes wind because the hot air rises over the cold air which
