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How may nitrate from fertiliser entering lakes cause the death of fish in fresh water?

The addition of excess nitrate to the freshwater body causes algal bloom on the surface, blocking sunlight. This reduces the photosynthetic activity of submerged plants, causing them to die. Subsequently, th...
CM
Answered by Cocoa M. • Biology tutor
3011 Views

How many electrons are in a chloride ion Cl- and how are they arranged in the shells? a periodic table can be used.

18 total2,8,8(2,8,7 in chlorine atom, one more from another atom to form the negative charge and filling the third shell)
MM
Answered by Melissa M. • Chemistry tutor
5664 Views

‘The most important reason why Adenauer was able to remain in power for so long was the economic miracle.’ How far do you agree?

Konrad Adenauer was chancellor from September 1949 to October 1963 a rule of 14 years longer than the whole of the Weimar republic or Adolf Hitler. Compared to Weimar’s 13 chancellors and Hitler’s use of for...
DL
Answered by Daniel L. • History tutor
9121 Views

How is a sperm cell adapted to its role?

Since the sperm cell's role is to swim to the egg and fertilise it, it requires a tail for movement. The middle piece is full of mitochondria to provide energy so that the sperm cell can swim and reach the e...
PB
Answered by Patricia B. • Biology tutor
9626 Views

Give me an example of a time when you demonstrated leadership skills

The candidate will be expected to give a specific example of such and explain it in details for either 3-5 minutes. The person listening wants to ensure that the candidate is confident and comfortable with s...
KK
2426 Views