Answer:
2) liquids only
Explanation:
Hydrosphere is a total amount of water on the planet Earth. It includes water on the surface of earth,underground and in the air. A hydrosphere of a planet may be liquid,ice or vapor.
Earth's surface water is available in the form of lakes,rivers and oceans,It also exists in underground as wells,and aquifers.In the air water vapor exists in the form of clouds and fog.
Answer:
Every recognized species on earth (at least in theory) is given a two-part scientific name. This system is called "binomial nomenclature." These names are important because they allow people throughout the world to communicate unambiguously about animal species.
Adult stem cells are rare. Their primary functions are to maintain the steady state functioning of a cell—called homeostasis—and, with limitations, to replace cells that die because of injury or disease
Answer:
A new mutation
Explanation:
A mutation refers to the random changes in the DNA of organisms. A mutation changes the allele and genotype frequencies by the introduction of a new allele in the gene pool.
However, mutations are not the major factor responsible for changes in the gene pool of a population as mutations are rare. The rate of mutations is very slow and does not allow it to serve as a major factor to change the allele and genotype frequencies.
