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In the context of weather and climate, what is a depression?

A depression is a huge area of low pressure that measures many 100s of km. Characteristics: ● Such low atmospheric pressure, often below 1000mb. ● Shown on a weather map by closed isobars with decreasing pre...
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Answered by Laura C. • Geography tutor
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When do I need to use the Subjunctive?

Uses of the Subjunctive in Spanish 1. Verbs of influence (decir, ordenar, obligar, prohibir que)Recomiendo que veas esta película.Las leyes impiden que usemos las drogas. 2. Impersonal expressions (except es...
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Answered by Laura C. • Spanish tutor
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If someone has blood type A+: which are his possible genotypes and who can he donate blood to?

The ABO blood type system relies upon the co-dominant alleles I A and I B , which are expressed any time they are present and are dominant over i which is recessive. If someone has blood type A, that means i...
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Answered by Francisco T. • Biology tutor
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Describe how the small intestine is adapted for efficient glucose absorption. (3 marks)

The small intestine has a very large surface area to increase the amount of area that glucose can diffuse out of the small intestine into the bloodstream. The large surface area is created by villi, which ar...
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Answered by Morgan H. • Biology tutor
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Why does propanol have a higher boiling point than propanone, propanal or methyl ethanoate?

Molecules of propanol have a hydrogen directly bonded to a NOF atom (oxygen in this case), which means that they can hydrogen bond with eachother. The oxygen in the other three molecules is only bonded to a ...
KW
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