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It's infinitely renewable.
While non-renewable energy sources like oil, gas and coal are becoming increasingly scarce, the sun's energy is limitless. Wherever sunlight shines, electricity can be generated.
Fertiliser contains nutrients for plant growth, typically nitrogen and phosphorus. Much of the fertiliser applied to farmland washes off into rivers and lakes during rainfall events. A high concentration of nutrients in a river or lake is called eutrophication. Algae, like plants, need nutrients to grow, and their growth in lakes is usually limited by a lack of nutrients. This means, any additional input of nutrients into a lake can result in an algal bloom. An algal bloom typically changes the trophic and ecological state of a lake, and can be harmful to other organisms who are adapted to less nutrient-rich conditions. Once the algae deplete the nutrients, a mass algal die-off will occur. The algal biomass will decompose, resulting in anoxic conditions, which places additional stress on aquatic organisms.
Answer:
c) Offspring tend to inherit characteristics acquired by their parents during their lifetimes
Explanation:
the offsprings tend to inherit characteristics
Answer:
Answer:
safe speed for the larger radius track u= √2 v
Explanation:
The sum of the forces on either side is the same, the only difference is the radius of curvature and speed.
Also given that r_1= smaller radius
r_2= larger radius curve
r_2= 2r_1..............i
let u be the speed of larger radius curve
now, \sum F = \frac{mv^2}{r_1} =\frac{mu^2}{r_2}∑F=
r
1
mv
2
=
r
2
mu
2
................ii
form i and ii we can write
v^2= \frac{1}{2} u^2v
2
=
2
1
u
2
⇒u= √2 v
therefore, safe speed for the larger radius track u= √2 v