environmental service agencies’ demands.

National Weather Service’s restrictions.

replacement of the older GOES-6 and GOES-7 orbiters.

National Aeronautics and Space Administration’s rules.

difficulty of a total coverage of the Earth.

explica o que é a orbita geossíncrona.

exemplifica como o GOES poderia ser.

compara as órbitas geossíncronas do GOES.

define as futuras órbitas do GOES.

estabelece que o equador tem 35 800 km.

the atomic properties of the sample depend on the magnetic field.

all electron spins of materials should produce an external magnetic field.

an external magnetic field acts on magnetic forces a material’s electrons.

the electron motion in a magnetic field tend to even the magnetic moments.

there’s an absence of magnetic field with unpaired electrons.

neither in diamagnetic materials nor in paramagnetic materials the electrons are paired.

the susceptibility of a magnetic field may be positive or negative, according to its stength.

the alignment of all electron paths when there’s an external magnetic field is typical of elements like magnesium and molybdenum.

most elements in the periodic table are somewhat attracted by an external magnetic field.

the magnetic property retention is absent both in diamagnetic and paramagnetic materials when the external magnetic field is taken away.

a cause.

a consequence.

a contrast.

a condition.

a comparison.

mathematicians and historians do not understand the expression “Every educator is a teacher of reading”.

students do not have access to much information because of the blitz of video gaming, social networking and texting.

the fact that textbooks have always been of students’ interest has not changed.

keeping adolescents engaged with reading is an easy task.

educators of all areas teach reading and writing.

Tracy was conscious of her audacity from the beginning of the car trip.

It can be inferred from the text that Tracy had to pull off because she was laughing too much.

It can be concluded from the expression “tears streamed down her face” (l.5) that Tracy was sad.

It can be inferred from the text that Tracy is usually a happy person who laughs a lot.

It was the first time Tracy was going to Manhattan.

All photographs were taken recently.

There were more pocketbooks and wallets than postcards.

There were not any very good photographs in the description.

There were only photographs, postcards, pocketbooks and wallets in the shop.

The shop was located in the middle of a street.