Physics Middle School

Why do most amphibians return to the water to reproduce?
A *Amphibians must return to the water to find a mate.
B *Fertilization can only occur externally in the water.
C *Amphibian eggs do not contain a protective shell.
Pls help

Why Do Most Amphibians Return To The Water To Reproduce?A *Amphibians Must Return To The Water To Find

Answers

Answer 1
C. amphibian eggs do not contain a protective shell
Answer 2
C, amphibian eggs do not contain a protective shell

Related Questions

3 ways how natural disasters impact environment.

Answers

1. When sewage treatment plants flood or debris reaches reservoirs and streams, the quality of the water is affected.

2. Storm surges cause beaches to shift and alter shape.

3. During flash floods, riverbanks erode.
Here’s my simple answer:

1.Buildings collapse
2.toxic gases release into the environment
3.disease

2. Why don't we produce everything ourselves?

Answers

because we haven't learn wverything

Because we don’t have all the resources needed to produce certain items, and importing/exporting can help our economy

Which organic compound forms much of the structure of cells?
A. Carbohydrates
B. Nucleic acids
C. Lipids or
D. Proteins

Answers

Which organic compound forms much of the structure of cells?

Answer: A Carbohydrates

the organic compound is nucliec acids

I need to Label the seasons in the Northern and Southern hemisphere at each location. I need answers and don’t understand this Please help. (Middle school science btw)

Answers

See attached image for answers

Pls mark branliest!

The sides that’s are tilted to the sun are experiencing summer and away winter

4. What would you suggest we do to reduce our trade deficit?

Answers

Answer:

Increase economic growth and condition.

Reducing the exchange rate (devaluation or depreciation) Reducing the value of the exchange rate can help to reduce a trade deficit.

In your own words, define the following terms.
2. climate___________.

Answers

Answer:

The state of a certain type of land or a biome.

Climate is the weather of a certain area

This Is Chemistry Question, My Laptop Got Lag When I was Posting It :( Explain The Rutherford Atomic Model
Answer Should Be given With Headings!

Answers

Explanation:

that’s hard

Answer:

Rutherford conducted an experiment (α-particles scattering) in order to find the arrangement of electrons and protons in an atom. This experiment led to the discovery of nucleus in an atom.

Explanation:

Rutherford bombarded a thin gold foil (about 0.00004 cm thick) with alpha particles in an evacuated chamber. These particles got scattered and were allowed to to strike on a circular zinc sulphide coated screen. He observed a flash of light on the screen where the alpha particles struck. From this experiment, he made the following conclusions.

Observation 1: Most alpha particles (α-particles) pass straight through the gold foil without any deflection from their original paths.

Conclusion: There is a lot of empty space in the atom.

Observation 2: A few alpha particles were deflected, at small angles and a few at large angles.

Conclusion: There is a small positively charged object at the centre of the atom. He said this because as alpha rays are positively charged it can pass through only negatively charged particles and get deflected by the same charge. He concluded that the small positively charged object present within the atom is called the nucleus.

Observation 3: Very few alpha particles completely rebounded on hitting the gold foil.

Conclusion: The nucleus is dense and hard. It is located at the centre of the atom.

(Refer the picture given in the question)

#HopeItHelps

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The velocity of the rocket is not the same as the speed of the rocket. What is the difference between the velocity of an object and the speed of an object

Answers

The difference between the velocity of an object and the speed of an object is that the velocity represents both the magnitude and direction, and speed represents only the magnitude.

What is velocity?

Velocity is the time rate of change of displacement.

Speed is the ratio of distance and the time taken to travel that distance.

Thus, the difference between the velocity of an object and the speed of an object is that the velocity represents both the magnitude and direction, and speed represents only the magnitude.

Learn more about velocity.

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Velocity is a vector quantity or it has direction but speed is scalar quantity or it doesn’t has direction

1. Suppose a lawyer can type faster than any secretary. Should the lawyer do her own typing?

Answers

Answer:

Yes, the lawyer should do her own typing

Explanation:

If a lawyer types faster than a secretary, it's obvious the lawyet should do her own typing.

What is the speed of light?

Answers

Answer:

299792458 meters per second (approximately 300000 km/s or 186000 mi/s)

Explanation:

The speed of light in vacuum, commonly denoted c, is a universal physical constant that is important in many areas of physics. Its exact value is defined as 299792458 meters per second (approximately 300000 km/s or 186000 mi/s).[Note 3] According to the special theory of relativity, c is the upper limit for the speed at which conventional matter, energy or any signal carrying information can travel through space.

Answer:

The speed of light in vacuum, commonly denoted c, is a universal physical constant that is important in many areas of physics. Its exact value is defined as 299792458 metres per second (approximately 300000 km/s or 186000 mi/s). According to the special theory of relativity,

Explanation:

is what i know

1. Why is agricultural productivity in developing countries usually so low?

Answers

Answer:

they are less able to benefit from the economies of larger scale production.

Explanation:

Education levels are also much lower in developing economies, and child labor is more common.

they are less able to benefit from the economies of larger scale production.

6. Should we be worried about our trade deficit? Explain why or why not.

Answers

Answer:

A trade deficit is neither inherently entirely good or bad, although very large deficits can negatively impact the economy. A trade deficit can be a sign of a strong economy and, under certain conditions, can lead to stronger economic growth for the deficit-running country in the future.

Explanation:

The most obvious benefit of a trade deficit is that it allows a country to consume more than it produces. In the short run, trade deficits can help nations to avoid shortages of goods and other economic problems. In some countries, trade deficits correct themselves over time.

6. What are the arguments for using real per capita GNI to compare living standards between countries? What weakness does this measure have?

Answers

Answer:

Levels of real per capita GDP are often cited to indicate living standards are higher in one country than another, and, by implication, that some systems of government or sets of government policies are better than others, but this measure of comparative living standards is so flawed as to be practically useless.

Explanation:

i need help with this plsssss

Answers

Answer:

Increased ; Decreased

Explanation:

Force = Mass x Acceleration

If I increase my mass (by putting in books in the box) shouln't my acceleration go down since they are inversely related to each other (when one goes up, the other goes down and vice versa). My force stayed the same at 10 N, thus only mass and acceleration fluctuated relative to each other.

Increased , decreased.

1. This morning you pulled on your Levi's jeans from Mexico, pulled over your Benetton sweater from Italy, and laced up your Timberland boots from Thailand. After a breakfast that included baNNs from Honduras and coffee from Brazil, you climbed into your Volvo from Sweden fueled by Venezuelan oil and headed for a lecture by a visiting professor from Hungary. If the United States is such a rich and productive country, why do we import so many goods and services?

Answers

Answer:

because some things are just made better in different countries each country specialises in its own items they're better quality

1. Why are some countries so poor while others are so rich?

Answers

Answer:

It depends on how much resources a country has.

Depending on how much natural resources a country have will determine the wealth or poverty of the country. The leader or leaders of a country could also determine if a country is wealthy or in poverty.

i'll give the first person to answer a brainly

Answers

Answer:

Option b

Hope it helps...

Your answer is letter b because I have no idea what

3. Why do families in low-income countries have more children than those in higher-income countries?

Answers

Answer:

Sometimes the more family members you have, more money can be brought in.

I think it’s because first of all families with low income may not be fully educated and not civilized second of all poor families have more children so their income and their outcome may not be equal sometimes the outcome may even be more than the income

4. Why have abundant Ntural resources such as oil or diamonds turned out to be a curse for some countries?

Answers

Answer:

the prospect of resource rents may be an incentive to rebel or secedeor for a simple version an abundance of natural resources can lead to corruption and stagnation, or even economic contraction

Explanation:

6. What is a maNged float? What are the disadvantages of freely floating exchange rates that led countries to the maNged float system?

Answers

Answer:

Terms in this set (7)

1. Compare and contrast the fixed, freely floating, and managed float exchangerate systems. What are some advantages and disadvantages of a freely floating exchange rate system versus a fixed exchange rate system?

Under a fixed exchange rate system, the governments attempted to maintain exchange rates within 1% of the initi¬ally set value (slightly widening the bands in 1971). Under a freely floating system, government intervention would be non existent. Under a managed float system, governments will allow exchange rates move according to market forces; however, they will intervene when they believe it is necessary.

A freely floating system may help correct balance-of-trade deficits since the currency will adjust according to market forces. Also, countries are more insulated from problems of foreign countries under a freely floating exchange rate system. However, a disadvantage of freely floating exchange rates is that firms have to manage their exposure to exchange rate risk. Also, floating rates still can often have a significant adverse impact on a country's unemployment or inflation.

Explanation:

your welcome

3. How can the U.S. economy grow if we import more goods and services?

Answers

The U.S. economy grow via trade deficit,  if we import more goods and services.

What is import and export?

When any good or service is  brought in from one country to another is called Import while exports are when goods and services produced in the home country for sale to other countries.

If a country imports more than it exports, it runs a trade deficit. If it imports less than it exports, that creates a trade surplus. When a country has a trade deficit, it must borrow from other countries to pay for the extra imports.

Thus, the U.S. economy grow via trade deficit,  if we import more goods and services.

Learn more about import and export

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Answer:

they need are help so they can make money and get help right away

Explanation:

Can someone answer this

Answers

It’s d because earths weather is particularly caused by the changing distance between the earth and sun.

FASTTT FOR BRAINLIST
Mrs. Smitherman’s lab has a sample of a radioactive potassium isotope with a half-life of one week.
How much of the original sample would be left in the lab at the end of the third week?
A 1/8
B 1/4
C 1/2
D 1

Answers

the answer should be A?
A at the end of three weeks there will be 1/8 left

Alexis and Jeremy are planning their weight training workout program together. Jeremy shows that he places a high importance on following correct safety procedures when weight training because he performs exercises: Group of answer choices

using low reps with maximum weights
with correct technique
from smallest muscle group to largest group
as quickly as possible​

Answers

Answer:

A:using low reps with maximum weights

Explanation:

Answer:

A

Explanation:

To reduce friction on an aircraft, the surfaces (skin) are ? and the body is ?
.

(possible answers below)

Answers

Answer:

Surface (skin) should be smooth and body should be streamlined shaped.

Surface : Smooth
Body : Streamlined

Can someone answer this question

Answers

Answer:

The correct answer is C

Explanation:

carbon dioxide, water vapor, and nitrogen make up the largest percentage of earth's atmosphere

Answer C

Explanation:
Nitrogen is the most abundant gas on the atmosphere which fills 71% of the atmosphere and oxygen has 21% and it leaves 1% of the atmosphere. That is filled most by carbon dioxide and water vapor

2. How has the growth of Earth's human population changed in recent decades? In your answer, discuss growth rate and the number of people added each year.

Answers

Humans population had dropped by half since the 1960s from 2.2% in 1962 to 1.15% today

Vocabulary
Draw a line that matches the term with the correct definition.
3. severe weather
A. a huge mass of ocean water that floods the shore
B. a storm with lightning and thunder
C. a violently rotating column of air stretching to the ground
D. weather that can potentially destroy property or cause loss of life
E. a tropical low-pressure system with winds of 119 km/h or more

Answers

Answer:

C. a violently rotating column of air stretching to the ground

Explanation:

C. a violently rotating column of air stretching to the ground

why a paperclip does NOT float?

Answers

Because of Surface tension

Answer: the tention of the water since the object is light the water particles can rise it so it's not entilely floating

Explanation: flat line:_____________________________

Which questions should you try to answer in an investigation of force when using a basketball? Select the two correct answers.(1 point)


Which forces are acting on the basketball when it is stationary, and are they balanced?


Which forces are acting on the basketball when someone shoots it, and are they balanced?


How tall is the person shooting the basketball?

Where is the person standing in relation to the court?

Answers

Answer:

gravitational force

Explanation:

no force act upon a stationary object.

for a force will remain in its position of unchanged until an external force/ load is been applied.

(2) a force acting upon a basketball when shoots it:

i. when a basketball was shoots, upon a point the body will momentarily stopped and gravitational force acted upon it by deviating downward act a target spot thrown to.

ii. the height of a person is independent of shooting basketball

III. the person shooting the basketball will face toward directing the court.

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