Answer: A.
Explanation: Scientists think that geographic isolation is a common way for the process of speciation to begin: rivers change course, mountains rise, continents drift, organisms migrate, and what was once a continuous population is divided into two or more smaller populations.
Answer:
When the sun heats water at the surface of the ocean, some of the water will evaporate and increase the concentration of salt in the water at the surface. ... This process, combined with fresh water flowing into the ocean from river and changing the salt concentration of the water, contributes to ocean currents.
Explanation:
Fish have <span>Eukaryotic cells
</span>
it is a diploid cell formed by combing of two haploid gametes
2 characteristics of the phylum:
* They are bilaterally symmetrical and triploblastic.
* Chordates are coelomate and show an organ system level of organisation.
Phosphorus is most commonly found in rock formations and ocean sediments as phosphate salts. Phosphate salts that are released from rocks through weathering usually dissolve in soil water and will be absorbed by plants. Phosphorus cycles through plants and animals much faster than it does through rocks and sediments. Given this information, the answer is;
<u>D. All of the above</u>