What type of worm has a circulatory system?
Nematodes
Segmented worms
Roundworms
Flatworms

Answer:

Convection :)

Answer:

synthesis, single-replacement, double replacement, decomposition, or combustion reaction

Explanation:

pretty sure this is right

The volume of the key is 0.8 mL.

An object that floats on water will displace its own volume. In the same vein, an object that sinks in water will displace its own volume.

Thus, in order to find the volume of an object that sinks in water, measure the volume of water that it displaces.

In this case, the water displaced by the key was measured 3 times. The average of the 3 readings will give the volume of the key.

Volume of the key = 0.7 + 0.8 + 0.9/3 = 0.8 mL

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Answer:

Explanation:

so 10.0ml -3ml

0.7+0.8+0.9ml = 0.0024 liters

Answer:  Charlotte, because baking causes a chemical change, but melting objects is a non-chemical change.

Explanation: Baking is a chemical change you cant turn it back to what it was before. Its chemical properties have changed. Melting is a physical change. Its chemical properties are still the same it has not changed. It just changed it's physical form but the object is still the object.

Answer:

Charlotte, because baking causes a chemical change, but melting objects is a non-chemical change.

Explanation:

took the quiz on edge

Answer:

praseodymium can conduct electricity as it is one of it's conductivities

Answer:

Keep in mind this changes from microscope to microscope.

Explanation:

On most classroom microscopes, there will be two knobs on either side of the scope.  These will increase or decrease the height of the "stage", which is how you "focus" the microscope.  The larger knob will move the stage the most, and thus, is called the coarse focus.  The smaller knob is called the fine focus, and, you guessed it, will move the stage the least.  There are usually three "objective lenses".  Each will have a different magnification and will be listed on the lens itself.  It rotates around the "revolving nosepiece".  MAKE SURE THAT THE SLIDE IS LOWERED BEFORE ROTATING THE LENSES!!!!  If you don't you WILL break the slide and you WILL get death looks from the teacher.

On the stage, there are two clips.  They move NOT up and down, but they spin.  what you want to do is to move the slide into the clips.  They will not break if you do not bend them more than what the slide will bend them to.

The technique for focusing the microscope is really easy once you do it a few times.  After making sure that the microscope is plugged in and the light on and the slide and lens in the lowest position/magnification (!) move the coarse focus knob so that the object in the slide is just visible.  Once you do that, from there use the fine focus knob to make the object most visible.

These instructions vary slightly from model to model of microscope, but the picture below is very accurate and everything I warned you about is for all microscopes.

Answer:

claim:

The outcome of the tug of war game results in the dogs getting stronger and more motivated.

evidence:

Tug-of-war is a fun game for the dogs. Playing it strengthens the connection

between the dogs . Tug of war helps the dogs exercise.

reasoning:

Since it is a fun game, dogs will be motivated to go out and play it. Then the two dogs will become friends and get even more motivated to go out because their new friend is outside. This will result in them playing tug of war often and they will get stronger when they play longer.

Answer: Not known

Explanation: There is not enough details to solve this question.

Answer:

Reprduce

Explanation:

Answer:

Both things are bad to your health but vaping has a minor impact in your health than cigarettes.

Explanation:

Even though vaping has a lot of chemicals that not just include nicotine but other substances that are toxic and that stay in your lungs for a long time giving it time to damage your lungs from the inside,

Cigarettes have over 7,000 toxic chemicals that can cause cancer and / or other illness in your body. This cancer can be caused inside your lungs but it can also give you cancer in other certain parts of your body.

Answer:

medium: The material or empty space through which signals, waves or forces pass. direction of propagation: The axis along which the wave travels. wave: A moving disturbance in the energy level of a field.

Answer:

:)

Explanation:

Recycling paper helps to reduce greenhouse gas emissions that can contribute to climate change. It takes 70% less energy and water to recycle paper than to create new paper from trees. Manufacturing with recovered paper cuts down on pollution that contributes to smog (and ill health).

Answer:

will help us use less energy. When we just keep filling landfills we take space away for growing trees to benefit our environment

Answer:

hold on i will help you soon

The period of time when sexual intercourse takes place between two organisms is called mating. However, all the matings need not end in fertilization.

The gestation period is a time when the embryo develops completely into a fetus. This is usually from the time of fertilization to the time of giving birth.

Let us take the comparison of the gestation period of 3 mammals.

The gestation period of a cow varies from 279- 287 days. The mating between the bull and cow occurs during the heat or oestrus period of the cow. At that time the bull mounts on the cow or vice-versa may happen during the mating period. This is termed bulling.

In the case of horses, the gestation period is 320-380days. The mating ritual in a horse is a bit different than in a cow. It usually has three phases of sexual behavior which includes: courtship, mating, and post mating behavior. During courtship, the stallion which is the male horse will approach the mare, prance, sniff her, nuzzle her, and groom her. The mare which is the female horse may squeal, kick, or move away to show the stallion that she is not ready. When the mare is receptive to breeding, she may stand still, deviate her tail, and urinate, leading the stallion to mount her. It usually breeds well in pastures than in controlled environmental breeding conditions.

Whereas in camels, the gestation period is far longer than in cows and horses. It is about 360-440days. The male camel displays its organ called a dulla to show out is ready for mating. The male camel Urinates on its own tail and swishes it over its back so that the Urine contains female-attracting pheromones. It shows distinct violent behavior towards other male camels. The female camel undergoes an estrous cycle in the breeding season which lasts receptive for 3-4 days, and non-receptive following the other 10 days. In the receptive period, the camel sits down and exposes its genitalia for the male camel to copulate. The whole mating takes about 20 minutes and is accompanied by gurgling and frothing by the male and bleating by the females.

It should be noted that African elephants have longer gestation periods like Asian elephants whereas no other animal has a longer gestation period than an elephant or a shorter gestation period than mice.

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Answer: Oxygen

Explanation:

Oxygen is not a good conductor, it is brittle, and has no luster.

Answer:

Water has a high specific heat, which means it absorbs more energy than air to raise its temperature

hoped this helped

Fueled by propane cylinders, gas jets produce the hot air that fills the envelope (similar to ones you might use on a portable camping stove).

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Answer:

Prevailing winds are the result of atmospheric circulation cells. They influence the climate of a region. Rising and sinking air can influence the precipitation of a region. Atmospheric circulation cells create the general climate of a region.

Explanation:

Answer:

.8 m/s^2

Explanation:

A= Force x Mass

.4 x 2 = .8

Answer:

S.

Explanation:

North and South must always be opposite of each other.

The cut end of the short piece of the magnet will be labeled as South (S). Therefore, option (B) is correct.

A magnet can be described as a material that produces a magnetic field and this magnetic field is responsible for the notable property of a magnet. Properties such as a force that pulls ferromagnetic materials, such as iron, steel, cobalt, etc., and attracts or repels other magnets.

A permanent magnet can be described as an object made from a material that is magnetized and generates its own magnetic field. Materials that can be magnetized, are strongly attracted to a magnet, are called ferromagnetic and include the elements iron, nickel, and cobalt.

The poles of a bar magnet cannot be separated by just cutting the magnet, the resulting pieces of magnet form a new set of North and South poles within them. Therefore, the small piece of the magnet will also have a set of South and north poles.

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Answer:

Banana ig  

Explanation:

Answer:

+6.

Explanation:

So, a chromium atom here has an oxidation number of +6.

Answer:

If you are looking for like a drawing say less.

Answer:

C. Methane.

Explanation:

Methane is a chemical that can kill you. A, B and D all won't kill you because that is a significant contributor to greenhouse gasses.

hope this helped.

To prepare 250 mL of a D10/NS solution using D10W and a vial of NaCl 4 mEq/mL, you would need 9.6 mL of NaCl. Normal saline (NS) contains 154 mEq/L of sodium chloride (NaCl). To prepare 250 mL of NS, you would need 250 mL * (154 mEq/L) = 38500 mEq of NaCl. Since the vial of NaCl contains 4 mEq/mL, you would need 38500 mEq / (4 mEq/mL) = 9625 mL = 9.6 mL of NaCl. So the correct answer is b. 9.6ml.

Answer:

Part A: Solid objects with a greater mass per unit of volume are more dense.

Part B: Objects with a lower mass per unit of volume are less dense.

Explanation:

Not sure if this answers your question!

Answer:

A: solids

B: gases

Explanation:

Not sure if this is the answer you are looking for, but if it is hope it helps.

no problems

The piece of evidence changed thinking about the channel on Mars because it shows that the rock was formed next to flowing water as such rock formations exist on Earth and were formed by flowing water.

The geologic process that could have created the channel on Mars is water moving. We can infer from the image that water running across the terrain on Mars created channels similar to those on Earth.

We can claim that the flowing of water creates the channels on Mars because when the water runs for a long period from the same region, it takes the sediments and creates channels.

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Answer:

sugar-water is a mixture not a compound.(homogeneous mixture.)

Explanation:

Compounds are substances formed by the chemical combination of two or more elements. Mixtures are substances formed by physically mixing two or more substances together.

The solution of sugar in water is considered a mixture not a compound because the particles of sugar and water are not completely dissolve nor mixed in a fixed proportion or ratio. hope this helped :)