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Ali M.
Instructor for six years
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Spanish
TutorMe
Question:

What is the difference between the verbs 'ser' and 'estar,' even though they can both be translated to 'to be?'

Ali M.
Answer:

'Ser' is used to describe something, for instance what something is made of, or what it is used for. 'Estar' is used for locations and more temporary qualities, like mood or how they are feeling.

French
TutorMe
Question:

Quel est un grand problème avec l'éducation universitaire?

Ali M.
Answer:

Le prix de l’université est un problème pour beaucoup de personnes. Par conséquent, il y a des personnes intelligentes qui ne peuvent pas apprendre n’ou s’inventer. Il faut qu’on offre des possibilités égales à tout le monde. Si les personnes ne pouvaient payer une éducation universitaire, ils travailleraient pour le salaire minimum, et s’ils n’ont pas l’argent pour acheter de la bonne nourriture, ils grossiront, et s’ils grossissaient, ils auraient les problèmes médicaux, et s’ils avaient les problèmes médicaux, ils dépenseraient de l’argent sur les traitements, et s’ils dépensaient de l’argent sur les traitements, ils passeraient beaucoup de dette à ses fils, et finalement, ses fils ne pourraient pas aller à l’université, et le cycle se poursuit. Inutile de dire, le coût de l’éducation universitaire est un grand problème dans notre société.

Biology
TutorMe
Question:

What two forces oppose locomotion in organisms? How does the energy used in opposing these forces differ for locomotion on land, in the water, and in the air?

Ali M.
Answer:

The two forces that oppose locomotion are friction and gravity. Gravity is the main concern for land animals, since air doesn’t provide too much resistance. For aquatic animals, friction takes more energy to overcome, because they are relatively buoyant in water, but water offers more resistance. For animals in air, gravity is the main issue, hence the airfoil wing shape.

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