Select the reason cities tended to develop at the fall line on rivers.

Answers

Answer 1
Towns began to develop along river valleys, where water was available. There were some important reasons for this. The land along the rivers is fertile. Animals can also be raised if there is enough food and water for them.

Hope this helped

Related Questions

What is the purpose of this material in the nucleus?*
O
makes antibodies
DNA makes protein molecules to help with almost every cellular process.
о
DNA makes super molecules to help with almost every cellular process.
to make concrete

Answers

Answer: DNA makes protein molecules to help with almost every cellular process.

i think?

Which of these particles is the smallest?

A.a proton

B.a nucleus

C.an electron

D.an atom

Answers

Answer:

an atom. It is the smallest thing known to man kind

Explanation:

Answer:

C

Explanation:

so basically, we can eliminate some answer choices right away.

an atom (answer choice D) is made up of all the other answer choices, so that is the largest (not the answer).

a nucleus (answer choice B) is made up of protons (answer choice A) and neutrons which means it is not the smallest either (not the answer).

now, we are left with a proton and an electron. electrons are much smaller than protons, so they are usually not included in an element's atomic mass. therefore, an electron is the smallest out of these answer choices.

Pesticides are a type of wastewater
pollutant.
True
False

Answers

True. When pesticides make it to a water source, this water source becomes polluted, and unsafe for humans, animals, plants, etc.

The atomic mass of Gallium is 69.72 AMU. The masses of the naturally occurring isotopes are 68.9257 AMU and 70.908 AMU for Ga-69 and Ga-71. Find the percent (%) abundance for each.

Answers

Answer:

40.7% abundance of Ga-71

59.93% abundance of  Ga-69

Explanation:

Given data:

Average atomic mass of Ga = 69.72 amu

Atomic mass of Ga-69 = 68.9257 amu

Atomic mass of Ga-71 = 70.908 amu

Percent abundance of each isotope = ?

Solution;

we know there are two naturally occurring isotopes of Ga.

First of all we will set the fraction for both isotopes

X for the isotopes having mass 68.9257

1-x for isotopes having mass 70.908

we will use the following equation,

68.9257x +  70.908 (1-x) = 69.72

68.9257x +70.908 - 70.908x = 69.72

68.9257x -  70.908x = 69.72 - 70.908

-1.9823x =  - 1.188

x=  1.188/1.9823

x= 0.5993

0.5993 × 100 = 59.93 %

59.93 %  is abundance of Ga-69 because we solve the fraction x.

now we will calculate the abundance of Ga-71.

(1-x)

1 - 0.5993 = 0.4007

0.4007× 100= 40.7 %

40.7 % for Ga-71.

Elements that are good conductors, malleable, ductile, and shiny

ductility

malleability

metal

metalloid

nonmetal​

Answers

Metals are ductile,malleable,good conductors and shiny

A mass spectrometer has determined the mass and abundances of all isotopes of an unknown element. The first isotope has a mass of 38.96amu (93.28%) and the second a mass of 40.96amu (6.72%). Calculate the average atomic mass and identify the unknown element, WRITE ONLY THE SYMBOL FOR YOUR ANSWER.

Answers

Answer:

I believe it is Potassium (K)

Explanation:

I did the math on a calculator and it was the closest atomic mass to potassium.

what is the volume when the density is 7.83g/ml and 19.6 grams?

Answers

to fine volume, you have to divide the mass by the density of the substance. in this, you’ll do 19.6/7.83=2.50

How many electrons does chlorine need to obtain a full outer energy level of electrons? A) 1 B) 2 C) 3 D) 4

Answers

You just need one to reach full energy. (A)

Only one electrons does chlorine need to obtain a full outer energy level of electrons. Thus, option A is correct.

What is an electron?

An electron is defined as a subatomic particle which is charged negatively either bounded to an atom or not it means free. The nucleus of an atom is made up of electron, proton and neutron. The electron is a basic particle and electron is not made of anything.

The nature of electron is free it means they are present freely in nature and consist of an atom.The main function of electron is that they play the role of negatively- charged component of an atom.

The electrons are primary source of current conducting and electrons number as well as atomic number of an element is always same or equal. There is no size of electron but the mass of electron is 9×10^-31.

Learn more about electron here:

https://brainly.com/question/1255220

#SPJ6

If a 2 kg object produces a 16 N force, what is its acceleration?

Answers

Answer:

f=ma

so   a=f/m

a=16N/2kg

a=8m/[tex]s^{2}[/tex]

How many elements are in the following equation? salt pure water(NaC/
+ H2O)

Answers

Answer:

4

Explanation:

Sodium Na, Carbon C, hydrogen H2, Oxygen O

Hey! I believe that there are 4 elements in the equation.

what two elements make up the most of the earth's core​

Answers

Answer:

The Earth's core is mainly made of iron and nickel.

Explanation:

Answer: The Earth's core is mainly made of iron and nickel.

Explanation:

If 96.5 grams of gold has a volume of 5 cm, what is the density of gold?

Answers

It’s a good birthday bro bro you bro don’t bro you know bro bro yeah tot

The amount of gravitational force between objects depends on their...
O Masses and the distance between them
O Masses and the frictional forces between them
O Speed and direction of motion
O Speed and the distance between the masses

Answers

Answer:

mass and distance between them

A 57.9 gram mass has a volume of 3 cm 3. What is the density of the mass?

Answers

Answer:

The answer is 19.3 g/cm³

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume}\\[/tex]

From the question

mass = 57.9 g

volume = 3 cm³

We have

[tex]density = \frac{57.9}{3} \\ [/tex]

We have the final answer as

19.3 g/cm³

Hope this helps you


A bucket is filled with pebbles and water. How can the contents of the bucket be classified?

A. A compound
B. A heterogeneous mixture
C. A solution
D. A homogeneous mixture

Answers

B.A heterogeneous mixture
Heterogeneous mixture

5) How do you describe a person who likes
inventing stories?
Plz Help ;_; :v​

Answers

Answer:

One word for this is, raconteur - it means a person skilled in telling anecdotes. anecdotist. narrator,  or storyteller

Explanation:

Why are scientists now more excited about sound levitation than they had been previously?
SELECT AN ANSWER

Sound levitation was previously only a theory and has only now been done experimentally.

By using sound levitation at the right frequency, scientists can break objects like glass.

The cost of sound levitation has decreased dramatically over the past decade.

Research has shown scientists can control the movement of liquids with sound without touching the liquid​

Answers

Answer:

Acoustic tractor beams use the power of sound to hold particles in mid-air, and unlike magnetic levitation, they can grab most solids or liquids even small insects. For the first time engineers have shown it is possible to stably trap objects larger than the wavelength of sound in an acoustic tractor beam. This discovery could enable the manipulation of drug capsules or micro-surgical implements within the body. The discovery could even lead to levitating humans.

Explanation:

How would you record the length of an object?

Answers

Answer:

a ruler

Explanation:

Compounds are different than elements because compounds are–
Group of answer choices

a pure substance; elements are not.

not able to be broken down into parts.

made from the same type of atoms.

combinations of two or more elements.

Answers

Answer: Compound are different than elements because compounds are combinations of 2 or more elements.

Think about atoms, molecules, elements, and compounds. How can you relate it to your own body? To the world around you, right now? Please explain in four sentences.

Answers

Answer:

Everything we see comes from the transferring of electrons, or redox reactions. Fire, the screen you are staring at, and many other chemical reactions that happen everyday, we don't even care to notice anymore. Everything in our bodies is made up of compounds, from simple things such as H2O, and to the food we eat, loaded with sugar, C12H22O11. From the para-benzoic acid on your sunscreen, to the O3 in the ozone layer high above us.

Explanation:

what frequency does television channel 7 broadcast at?

Answers

Answer:

Channel 7's frequency is 117.5 MHz

Answer:

174 MHz - 180 MHz w/ center frequency of 177 MHz

Explanation:

216 - 174 = 42

42/7 = 6

6 + 174 = 180          -           7                   -               177 MHz

180 + 6 = 186          -           8                   -               183 MHz

186 + 6 = 192          -           9                   -               189 MHz

192 + 6 = 198          -          10                   -               195 MHz

198 + 6 = 204          -          11                   -               201 MHz

204 + 6 = 210          -          12                  -               207 MHz

210 + 6 = 216          -           13                  -               213 MHz

what will happen to the speed of sound if you sing your favorite song during a cold day?​

Answers

Answer:

The speed will decrease

Except for helium, all the elements in the last column of the periodic table have
valence electrons.
0 7
0 8
О О
O 18

Answers

Answer:

O

Explanation:

they have O valence electrons

Forensic psychiatry focuses on the relationship between human behavior and criminal justice.
O True
O False

Answers

Your answer should be False
Hope this helps

What particle is in the nucleus that gives it a positive charge?

Answers

Answer:

proton

Explanation:

"Proton: A positively charged particle found in the nucleus of an atom. A proton contributes one atomic mass unit to the total atomic weight of an atom" this is definition per Google search

What is the primary type of heat transfer?: A cool breeze blows off the water.

Answers

Answer:

Explanation:

Heat transfer occurs by three main mechanisms: conduction, where rigorously vibrating molecules transfer their energy to other molecules with lower energy; convection, in which the bulk movement of a fluid causes currents and eddies that promote mixing and the distribution of thermal energy

Calculate the wavelength of a photon of light having a frequency of 3.50 x 1015 Hz. A. 1.05 x 1024 m B. 1.33 x 1016 m C. 8.57 x 10-8m D. 1.17 x 107 m​

Answers

Answer:

1.17x107m

Explanation:

According to the rock cycle, which of the following transitions are possible? Assume an unlimited number of steps.

A. )An intrusive igneous rock becomes a sedimentary rock.
B. )A sedimentary rock becomes soil.
C. )A metamorphic rock becomes an extrusive igneous rock.
D. )All of the above are possible.

Answers

Answer:

The answer is D

Explanation:

All of these solutions are correct.

Answer:

d

Explanation:

edge

what type of compound is iron (3) oxide

Answers

Answer:

B Group Salt (Ionic Bond)

Explanation:

Iron (III) Oxide

Fe2O3

Answer:

Carbon Trioxide

Explanation:

When hit from behind in a car crash, a passenger can suffer a
neck injury of whiplash. This is an example of Newton's
law,

Answers

Answer:

Neck injury, and back injury

Other Questions
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