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nevsk [136]
3 years ago
12

Some sixth-grade students are conducting a local survey. They want to find out what activities increased CO2 emissions in their

community within the last year. Ricardo came up with these questions for the survey. Which questions are appropriate for the assignment?
What is the average salary of middle school teachers?
How many trees were cut down during the year?
How many new factories opened last year?
How many factories in the community use fossil fuels?
What is being done to keep animals safe in the community?
Biology
2 answers:
Jobisdone [24]3 years ago
8 0
<span>How many trees were cut down during the year?
How many new factories opened last year?
How many factories in the community use fossil fuels?

As from all of these questions, they will be able to determine the level of pollution and environmental impact of industry in the local community. </span>
Degger [83]3 years ago
5 0
The relevant questions are number 2, 3, and 4.
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Which two materials form igneous rocks upon cooling?
Keith_Richards [23]

Answer: B) magma and lava

Explanation:

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1 year ago
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Why do warmer and wetter biomes have higher net primary productivity
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<span>biomes vary in their rates of net primary production-biomass that remains after cellular respiration limited by sunlight and nutrients available In general, warmer and wetter biomes have higher net primary productivity than colder and drier biomes. The reason for this trend is that plants require sunlight, water, and temperatures warm enough to grow. This is true even in aquatic ecosystems, where sunlight and the availability of nutrients determine the level of net primary productivity.</span>
5 0
3 years ago
How one rock can be transferred into either of the other rock type
mart [117]

Rocks can be classified in to three main groups - igneous, sedimentary and metamorphic. These three different rock types can be found in distinct areas of the UK.

Igneous rocks - these rocks are a result of volcanic activity in the past, when Britain was close to a plate boundary. Some of the igneous rocks are due to lava erupting at constructive plate boundaries. When the lava reached the surface, it cooled and solidified to form basalt rock. An example of this is the Giant's Causeway in Northern Ireland.

Other rocks are formed by hot molten magma beneath the Earth's surface cooling and solidifying as an intrusive rock under the ground, such as granite. This is later exposed as the rocks above are weathered and eroded at the Earth’s surface.

Sedimentary rocks – these are made up of small particles of sand and rock, which have been transported by the wind, rivers and ice and are usually deposited on lake or seabed. Over many millions of years, successive layers of sediments accumulate. These layers of sediments are compressed by the weight of the deposits above, into sedimentary rocks. These rocks form in layers, known as bedding planes.

When sand is compressed it forms sandstone. When mud is compressed it becomes clay. Limestone and chalk come from the remains of dead plant, animal and marine species and are rich in calcium carbonate and contain fossils. Many of these rocks were formed over 300 million years ago, in warm tropical seas during the carboniferous period. The existence of these rocks is evidence that Britain was at a different latitude compared to today. This suggests movement of continental areas of the globe, which is explained by the modern theory of plate tectonics.

Metamorphic rocks - these are rocks that have been changed in shape and form by intense heat and pressure at a plate boundary or along a fault line. These rocks start as either igneous or sedimentary rocks and are crystallised under the intense heat and pressure conditions to form rocks such as slates, schists, and marble. These rocks are very hard in nature and are often used as roof material.

short answer

The three main rock types are igneous, metamorphic and sedimentary. The three processes that change one rock to another are crystallization, metamorphism, and erosion and sedimentation. Any rock can transform into any other rock by passing through one or more of these processes. This creates the rock cycle.

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2 years ago
An unsaturated fat has the maximum number of hydrogens attached to the carbon backbone.
xz_007 [3.2K]

Answer:

The answer is true.. it is attached to the carbon backbone.

4 0
2 years ago
Three molecules of calcium metal and one molecule of nitrogen gas react to form one molecule of solid calcium nitride.
Darina [25.2K]

Answer:

The equation is:

3Ca + N2 → Ca3N2

7 0
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