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Anna11 [10]
3 years ago
5

What happens to the mass of substances during a chemical reaction? A Mass is lost. B Mass is gained. C Mass is not gained or los

t. D Mass is both gained and lost.
Geography
1 answer:
dexar [7]3 years ago
5 0

its (d) i know that for a fact because i am smart? i am a fifth grader !!!!!!!1

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Describe<br> 2. What is the structure of Earth's atmosphere?
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The atmosphere consists of 4 layers: the troposphere, stratosphere, mesosphere, and thermosphere. The troposphere is the lowest layer of the atmosphere. This is the layer where we live and where weather happens. Temperature in this layer generally decreases with height. The boundary between the stratosphere and the troposphere is called the tropopause. Above the tropopause lies the stratosphere. In this layer the temperature increases with height. This is because the stratosphere houses the ozone layer. The ozone layer is warm because it absorbs ultraviolet (UV) rays from the sun. The mesosphere is the layer above the stratosphere.This layer also contains ratios of nitrogen and oxygen similar to the troposphere, except the concentrations are 1000 times less and there is little water vapor there, so the air is too thin for weather to occur. The thermosphere is the uppermost layer of the atmosphere. In this layer the temperature increases with height because it is being directly heated by the sun.

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6 0
4 years ago
The country who’s economy can be described as developing is most likely to engage in which kind of economic activity
arsen [322]

The correct answer is - secondary economic activity.

The developing countries are trying to boost and develop their economies by developing the industry. They build lots of industrial facilities, factories, and instead of selling the raw materials to the more developed countries, they start to use the raw materials for their own purpose and manufacture them into products ready for the market. This production can include anything from creating steel from the iron ore, make juices from the fruits and vegetables, use the cotton for making clothes etc., so all in all making final products that directly end up on the market, thus making a bigger profit.

6 0
3 years ago
Evaluate the difference between human time and geologic time.
Flauer [41]

Answer:

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Explanation:

6 0
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Answer:

Peneplain.

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  • The base level is dynamic and changes according to the following factors as sea-level changes, tectonic factors, river captures, and sedimentation.
  • Peneplinasare low featureless deposits that are created by the terminus of the dream where the sediments are merged with the sea.
8 0
4 years ago
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