Liquid paraffin Gas bubbles
Yeast cells in
sugar solution
Indicator
solution
Tube A
Tube B
What is the purpose of the liquid paraffin in Tube A?
Tick one box.
To prevent evaporation
To stop air getting in
To stop the temperature
going up
To stop water getting in

Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction. this is an example of speciation.

The rapid decomposition of organic matter produces evidence which supports: the slow accumulation of coal deposits long ages of the earth rapid burial of vast amounts of vegetation biblical account of noah's flood

Which worm has eyespots that are used to detect light? a fluke b marine worm c planarian d tapeworm