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Breifly describe the cohesion-tension theory in plants?

  1. Water evaporates from the cells and leaves the plant once the stomata open,

  2. This creates a suction which pulls more water into the leaf

  3. As water is cohesive d...

BQ
Answered by Brendan Q. Biology tutor
29201 Views

What is meant by the term salt? And how would you confirm if the salt had chloride ions in?

Part 1: "A salt is is when the Hion in an acid is replaced with a cation (e.g. a metal)" 

Part 2: You would use the silver nitrate test for halide ions. You add dilute nitri...

BQ
Answered by Brendan Q. Chemistry tutor
2718 Views

Describe how giving a vaccine leads to production of antibodies against a virus

A vaccine is a weakened or dead form of a virus that contains the antigen of that virus.

An antigen is a protein on the surface of the virus that allows the body to identify it.

Specific T h...

OT
Answered by Olivia T. Biology tutor
7923 Views

Two planes have eqns r.(3i – 4j + 2k) = 5 and r = λ (2i + j + 5k) + μ(i – j – 2k), where λ and μ are scalar parameters. Find the acute angle between the planes, giving your answer to the nearest degree.

Summary of solution: To find the angle between the planes, we must find the normal vector to each plane and then use the scalar product to find the angle between these two normal vectors....

DC
7208 Views

To what extent did the collapse of the League of Nations cause WW2?

It is important to emphasize there were myriad causal factors to World War Two, which began in September 1939 when Hitler invaded Poland. The collapse of the League of Nations was arguably a leading facto...

KS
3317 Views

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