HELP PLZ !!!! 20 POINTS !!!How were natural resources important in the growth of Minnesota flour milling, lumbering, and iron mining industries?

Answers

Answer 1
Answer: Made people Want to come and start a business 
Answer 2
Answer: By all the resources many saw Minnesota as a place to make business and get richer.

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Iron is a solid, grey metal. Oxygen is a colorless gas. When iron and oxygen chemically combine , rust is made. Rust has a reddish brown color. Why does rust differ from iron and oxygen?

Answers

Because the formation of rust is a kind of chemistry reaction.
After chemistry reaction, compound with new properties is produced.
Of course, color is one of the new properties.
For example, if you put iron in colorless acid solution, a green solution is made.
This kind of chemisty reaction differs from physical reaction, for example, pigment with one color dissolves in liquid, a liquid with same color is made.

(Science and 15 points) Which of the following processes produces food?A. Excretion
B. Photosynthesis
C. Reproduction
D. Respiration

Answers

The answer is B. Photosynthesis

The answer to you question is B (photosynthesis) because it transfers light into food.

Someone answer I will mark you as brainliest if correct

Answers

I think the answer could be B.
It's been a while since I've learned anything about this but here's what I know, hopefully it will help you:
Waves are created by wind but dragging across the top of the ocean and then a force pulling the water back down. The question is asking how energy transfers through a wave though and that leads me to guess that the answer is D. Water particles are set in a circular motion. Water moves in a circular motion to the best of my knowledge. 

Hope this helps! (:

your friend has to plan an experiment for a science fair. He asked for your help. His topic is "The Strongest Cloth for Backpacks." What variables must the experinemt include? What variables must be controlled?

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The strongest cloth for backpacks is the most durable fabric such as nylon, cotton or canvas. These are the most durable fabrics and can withstand wear and tear over time.

What makes a quality backpack?

A quality backpack should last a couple of years. It enables us to carry things safely. A good backpack should be waterproof, lightweight, flexible, durable and provide protection to the materials.

A quality backpack should have heavyweight material which can hold more weight.

Nylon is the most commonly used material to make premium quality backpacks. It is waterproof, lightweight and also resistant to wear and tear. The only disadvantages of using this material is its high cost and not stylish.

Nylon is a wonderful material to be used when it comes to camping and hiking.

Learn more about Nylon here:

brainly.com/question/25835424

#SPJ2

The variables will include all of the materials for the backpack. The controlled variable will be how much roughing up each cloth will experience.

Example when materials are prepared as fluids so they can be moved more easily

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A simple, albeit slightly less useful example perhaps, is when a foundry, or individual metalworker, liquefies metal such as iron, aluminum, or steel so that it can be mixed in with specific forging agents or transferred around a workplace. 

In general solids are easier to transport than liquids, but the above metal example is a valid one and the only other one that comes to mind is that of concrete. It is mixed as a liquid and transported as such, but then sprayed or laid down to dry and form a solid surface or filler.  
A simple, albeit slightly less useful example perhaps, is when a foundry, or individual metalworker, liquefies metal such as iron, aluminium, or steel so that it can be mixed in with specific forging agents or transferred around a workplace. 
In general, solids are easier to transport than liquids, but the above metal example is a valid one and the only other one that comes to mind is that of concrete. It is mixed as a liquid and transported as such, but then sprayed or laid down to dry and form a solid surface or filler.  
Explanation:

Both gases and liquids are fluids, therefore technically, the gas to liquid stuff does not work

In addition to the LN2 and LO2 the opposite guys mention, organic compound gases also are oftentimes created into liquids. LPG is of a composition that it liquefies at low pressures. LNG is gas that's terribly cold in order that it becomes a liquid in order that tons are shipped during a tanker. 

Industrial users additionally build solids into liquids for transport in pipelines. as an example, coal slurries area unit typically used. Coal is ground up into the mud, and mixed with water, and may then be pumped up through pipelines. There are different sorts of slurrieslike wood chips/water in paper mills, sand/water mixture in dredging machines.

How many molecules of isopently acetate C7H1402 are released (1x10^ -6g) in a typical bee sting

Answers

The  number of molecules of isopently acetate is  4.63  x 10¹⁵  molecules

 calculation

Step 1:  find the moles of isopently acetate( C₇H₁₄O₂)

moles  =  mass÷  molar mass

From periodic table the molar mass of C₇H₁₄O₂

= (12 x7 ) + (1 x14) +(16 x2) =130 g/mol

moles = 1 x10⁻⁶ g÷ 130 g/mol =  7  x 10⁻⁹ moles

step 2 ; use the Avogadro's  law  constant to calculate the number of molecules

That  is according to Avogadro's law  1 mole  = 6.02 x 10²³  molecules

                                                          7 x 10⁻⁹ moles = ?  molecules

by cross multiplication

= { (7 x 10⁻⁹ moles x  6.02 x10²³  molecules) / 1  mole} = 4.63 x 10¹⁵  molecules