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Name and outline the two types of circulatory systems

A single circulatory system is where blood flow starts with deoxygenated blood being pumped by the heart to the lungs or gills and then travelling directly to the rest of the body’s tissues. Found in fish...

BS
Answered by Bianca S. • Biology tutor
7866 Views

How do you form the imperfect tense in French?

  1. Take a regular verb, e.g. jouer-to play.

  2. Conjugate it in the 1st person plural, I.e. nous. E.g. jouer= jouons

  3. Take off the -ons, to leave the stem. E.g. jou

    WW
    Answered by William W. • French tutor
    2257 Views

How does fractional distillation work?

Different length hydrocarbon chains are separated by their different boiling points as longer chains will have stronger intermolecular attractions. The crude oil is heated and injected into the base of th...

BS
Answered by Bianca S. • Chemistry tutor
4928 Views

How is a polar bear adapted for it's environment? (4 marks)

Polar bears are well adapted for survival in the Arctic: 

White fur to camouflage themselves from prey on the snow and ice. 

Thick layers of fat and fur for insulation against the cold.

...
RM
Answered by Ruwani M. • Biology tutor
9881 Views

The destruction of habitat can lead to the extinction of animals. Name 3 other disadvantages of deforestation.

  1. Soil erosion

  2. Eutrophication

  3. Global warming

  4. Less transpiration

AW
Answered by Ally W. • Biology tutor
2969 Views

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