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3 years ago

This North American country is a superpower. Canada Greenland Mexico U.S.

2 answers:

5 0

A superpower is a country which is very strong internationally and which exercises its power and influence on the neighboring countries.

Among the options, Greenland has too small population to be a superpower, and Mexico is a developing economy still. Both US and Canada are strong economically, but it's the superpower.

FromTheMoon [43]3 years ago

5 0

The answer is The U.S.

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Which early hominid species is believed to be first to leave africa?

m_a_m_a [10]

Homo ergaster may have been the first human species to leave Africa and fossil remains show this species had expanded its range into southern Eurasia by 1.75 million years ago. Their descendents, Homo erectus, then spread eastward and were established in South East Asia by at least 1.6 million years ago.Oct 30, 2015

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3 years ago

How does energy from the sun affect the motion of molecules in a solid compared to molecules in a gas?

astraxan [27]

<h2>Right answer: Molecules in a solid move slower than in a gas. </h2>

Matter is composed of molecules, which are always motion, however, the speed of this movement will depend on its state:

-If it is a solid, the movement of the molecules at room temperature is <u>very small</u>. This means, the atoms intertwine forming defined narrow crystal structures.

-In the case of liquids, molecules have more movement, however there is still some union between the atoms of the body, although much less intense than in the solids. This can happen if the temperature of a solid increases, it loses form until the crystalline structure disappears, reaching the liquid state.

-In the gases the movement of the molecules is <u>maximum</u>, it can be said that they are in chaos and show little response to gravity. They move so quickly that they are released from each other and are hugely separated from each other.

Now, the radiation coming from the Sun is transformed into kinetic energy causing the movement of the molecules, then this kinetic energy is transformed to thermal energy (heat). Hence, when there is an increase in temperature (due to the increase in kinetic energy) the speed of the vibration of the molecules increases.

However, these changes are not the same in all the states of matter. In the case of the solid state the molecules move slowly compared to the liquid and gaseous state.

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3 years ago

What people do you know whose lives and/or stories interest you?

pochemuha

Answer:

i am interest haile gebresilase

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3 years ago

Which of the following would be an important observation that could help you identify a metamorphic rock? Choose one: A. large c

raketka [301]

Answer:

D. the arrangement of mineral grains into a foliation

Explanation:

Due to the tectonic activity of the terrestrial lithosphere, igneous and sedimentary rocks formed in certain environments and under precise environmental conditions, can be subjected to new conditions (essentially pressure and temperature). Under the new conditions, and frequently under the action of tectonic stresses (linked, for example, to the formation of mountain ranges), pre-existing rocks are transformed texturally, structurally and mineralogically into a solid state, giving rise to metamorphic rocks. Its fundamental characteristic is to present blastic texture (i.e., solid state recrystallization), and in cases of deformation, anisotropic factories.

The petrographic characteristics of these rocks are especially complicated, given the solid state transformation processes that they have suffered, usually accompanied by intense deformation. Due to the gradual nature of metamorphic (and deformational) transformations, the characteristics of this type of rock also range from igneous or sedimentary to purely metamorphic.

<u>Foliation </u>

The term foliation (foliatus: leaf-shaped) refers to any planar (almost flat) arrangement of mineral grains or structural features of the interior of a rock. Although there is foliation in some sedimentary rocks and even in a few types of igneous rocks, it is a fundamental characteristic of rocks that have undergone regional metamorphism, that is, rocky units that have folded and deformed greatly. In metamorphic environments, foliation is caused, ultimately, by the compressive efforts that shorten the rock masses, causing the mineral grains of pre-existing rocks to develop parallel or almost parallel alignments. Examples of foliation are the parallel alignment of minerals with planar habit and / or elongated minerals; the parallel alignment of mineral particles and flattened edges; the compositional bandeado where the separation of dark and light minerals generates a laminar appearance, and the blackboard when the rocks easily separate into thin and tabular layers along parallel surfaces. These different types of foliation can be formed in many different ways, such as:

1. Rotation of elongated or planar mineral grains towards a new orientation.

2. Recrystallization of minerals to form new grains that grow in the direction of the preferred orientation.

3. Changes in shape in equidimensional grains to elongated shapes that align in a preferred orientation.

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3 years ago

What is the pattern of human settlement

DaniilM [7]

Answer:

A human settlement is a place where people live. Settlement patterns describe the ways in which villages, towns, cities and First Nation reserves are distributed, as well as the factors that influence this arrangement.

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3 years ago

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