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Are there fun ways to learn German?

Language learning doesn’t have to be a tedious task of memorising verb tables (at least not all of the time).Duolingo: https://www.duolingo.com/One fun way of practising German is Duoling...

Answered by Nina M. • German tutor

3419 Views

When do I use "sein" in the perfect tense?

In German the perfect tense is formed with haben/sein + past participle. The majority of verbs use haben in the perfect tense (such as Ich habe gespielt – I played). Transitive verbs (ve...

Answered by Nina M. • German tutor

4995 Views

The area of a square is 49cm^2. The perimeter of the square is equal to the circumference of a circle. Work out the radius of the circle. Give your answer to 1 decimal place.

Area of a square (A_s) = Side length (L)²

L = square root A_s

L = square root 49

L = 7 cm

Perimeter (P) = 4L

Answered by William D. • Maths tutor

14840 Views

Explain how natural selection can lead to new species forming (speciation)

Within a gene pool of a population, there is genetic variation, due to mutation. This leads to phenotypic variation. Some individuals will be better adapted to the environment than others and will ther...

Answered by William D. • Biology tutor

33672 Views

Describe how fertiliser run-off can cause damage to a lake's ecosystem.

Fertilisers are generally high in nitrogen, to replenish the nitrogen in the soil assimilated by the crop plants. When this is drained into lakes in run-off, it can cause dramatic consequences. Nitroge...

Answered by William D. • Biology tutor

4801 Views