Mendeleev called the rows periods.
Answer:
Explanation:
Hydropower is the generation of electricity from water through the construction of dams. it is a renewable energy source use over a wide range of environment. Construction of a waters storage project can raise the water level behind a dam from a few feet to several hundred feet by prevention water free flow called Inundation.
It leads to migration of human and other living organism such as fish and salmon. Salmon movement may be disoriented through the slower move of the water this leads to migration.
Fish moving around the dam coming in contact with turbines and the walls of the dam can become stressed, injured or die
vegetation and surrounding water it provide habitat for birds, waterfowl, and small and large mammals when hydroelectric project results in blockage of free-flowing river, the nesting, forage, and cover provided for the organism in these areas is temporarily or permanently lost.
<h3><u>Answer;</u></h3>
Alpine skypilots evolve large flowers above the timberline and small flowers below the timberline.
<h3><u>Explanation;</u></h3>
- <em><u>Natural selection occurs when organisms or species with certain genotypes are more likely to survive and reproduce, compared to individuals with other genotypes, and thus to pass on their alleles to the next generation.</u></em>
- Alpine skypilots evolve large flowers above the timberline and small flowers below the timberline. This is an example of disruptive selection, which increases genetic variation.
- Longer tails in dragonflies and finches for a particular beak size are examples of directional selection, which decreases genetic variation.
- Natural selection against heavy and light field mice is an example of stabilizing selection, which reduces genetic variation
