b. sporangia.
c. sori.
d. cones.
B. Weak acids dissociate to a great degree.
C. Weak bases dissociate only to a slight degree to produce free hydrogen ions.
D. When an acid and a base are mixed together in the proper proportions, two hydroxyl ions will unite.
The correct answer is A. When free hydrogen ions and free hydroxyl ions are removed from solutions of acids and bases, the acidic and basic properties disappear.
The strength of the acid or base depends upon its degree of ionization. Since different acids and different bases dissociate or ionize to different extent in water so their degree of ionization is also different. Strong acids and strong bases ionize in water completely while the weaker acids or bases ionize partially. Ionization of the weak acids in water are in equilibrium. The degree of ionization is the ratio of the number of ionized molecules to the number of molecules which are dissolved in water. In case of acids the ionized molecules are hydrogen ions and in case of bases hydroxyl ions.
neutron
cell
nucleus
Answer: Seismic waves are the wave form of energy that travels through the earth's layer and they are produced as a result of earthquake, magma movement, volcanic eruptions, land slides and large man-made explosions.
Body waves travel through the inner part of the earth, whereas surface waves travel through the interface of earth.
Further Explanation:
When the distortion of Earth's Crust occurs, the alternate sides of the crust of the earth experience shear stress and continues till the internal rigidity surpasses. Along the rapture calls the fault line and the sudden shaking releases mass-energy that separates the plates into two splits. The energy released during the process is referred to as Seismic Wave.
Reid’s theory is supported by the seismic theory that explains that the elastic rebound energy is preserved in-between the faults of the rocks, which is accountable for the incidence of the earthquake. The energy stored is released partly in the form of heat and partly as seismic waves. Seismic waves are considered waves that went through the Earth and are usually caused by earthquakes, volcanoes, or explosions.
These waves can be divided into two main categories:
• Body waves: These waves went through the inner part of the earth.
• Surface waves: These waves propagate at the interface or in-between to distinguishable media such as amid atmosphere and earth.
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Answer Details:
Grade: High School
Subjects: Biology
Chapter: Ecology
Keywords:
Earth, wave, heat, partly, seismic waves, body waves, surface waves, energy, mass-energy, internal, theory, experience, earth, rocks, faults.