Answer:
San Francisco and Los Angeles
Explanation:
The San Andreas Fault is the sliding boundary between the Pacific Plate and the North American Plate. It slices California in two from Cape Mendocino to the Mexican border. San Diego, Los Angeles and Big Sur are on the Pacific Plate. San Francisco, Sacramento and the Sierra Nevada are on the North American Plate.
Apple snails inhabit a wide range of ecosystems from swamps, ditches and ponds to lakes and rivers. The majority of the species prefer lentic water above streaming water and only a few species have adapted to rivers with strong current.
<span>Breathing through the siphon when submerged (<span>Pomacea canaliculata</span>).</span>
The lung/gills combination in apple snails reflects their adaptation to habitats with oxygen poor water. This is often the case in swamps and shallow waters. The without thelung they would completely depend on their gills, which would decrease their ability to survive.
Another advantage of air breathing in combination with a shell door (operculum) is the ability to survive periods of drought often common in these habitats during the dry season.
Answer:
B. A chemical formula that shows the relative number of each type of
atom in a molecule, using the smallest possible ratio
Explanation:
The empirical formula of a compound shows the relative number of each type of atom in a molecule and it uses the smallest possible ratio.
- It expresses the composition of the compound in the simplest whole number ratio of the atoms of the different elements that makes up the compound.
- To determine empirical formula of a compound , two pieces of information are needed;
- A. mass of each element in the compound
- B. Relative atomic mass of the constituent elements.
<span>Effective nuclear charge is an estimate of the charge experienced by the valence electrons.
</span><span>Sulfur has 6 valence electrons and a charge of 6+.
</span><span>The 3s electrons in sulfur are the 3p electrons, because the former spend more time closer to the nucleus.</span>
<span>Using Slater's Rules, effective nuclear charge of sulfur is +5.5.
2) No!</span><span> The Zeff doesn't differ from ions and atoms of the same element.</span>
