Answer:
B. Many members of a key species, and the ecosystem will no longer be stable.
Explanation:
An ecosystem that contains a high degree of biodiversity will have numerous organisms of different species. According to the question, sharks are stated to feed on a wide variety of prey. This means that sharks can feed on any other species of organisms at lower trophic levels.
In a situation whereby an ecosystem contains a low degree of biodiversity i.e. low variety of species, the sharks will have to consume a large numbers of a key species, which will cause the ecosystem to lose stability.
The debate<span> you refer to is about the ethics of embryonic </span>stem cell research<span>. And, of course, since ethics is involved many would tend to oppose further research on this area because to them it violates and does not respect life. Hope this helps. Have a nice day.</span>
Molecules diffuse across the plasma membrane with assistance from membrane proteins, such as channels and carriers.
Answer:
physical
Explanation:
example: water freezing into ice
there is no change in the chemical properties, frozen water is still water
Cloud seeding
Another instance where supercooled and mixed-phase clouds are studied extensively is related to cloud seeding and weather modification. Cloud seeding involves the addition of aerosol, such as silver iodide aerosol, that modifies the phase and size distribution of hydrometeors. The goal of cloud seeding is to alter the natural development of the cloud to enhance precipitation, suppress hail, dissipate fog, or reduce lightning. Various cloud seeding techniques are employed, as particles are released from rockets, aircraft, or ground. The seeding of ice-phase clouds can induce the phase transition from a supercooled water cloud to one composed of ice. In the case of dynamic cloud seeding, the purpose is to stimulate vertical air motions through increased buoyancy caused by the release of latent heat of freezing (Hobbs, 1975; Cotton and Pielke, 1995).
