Diagram of the human body system​

Standing on the ground and looking up, you are looking through the atmosphere. It might not look like anything is there, especially if there are no clouds in the sky. But what you don’t see is air – lots of it. We live at the bottom of the atmosphere, and the weight of all the air above us is called air pressure. Above every square inch on the surface of the Earth is 14.7 pounds of air. That means air exerts 14.7 pounds per square inch (psi) of pressure at Earth’s surface. High in the atmosphere, air pressure decreases. With fewer air molecules above, there is less pressure from the weight of the air above.

Pressure varies from day to day at the Earth’s surface - the bottom of the atmosphere. This is, in part, because the Earth is not equally heated by the Sun. Areas where the air is warmed often have lower pressure because the warm air rises. These areas are called low pressure systems. Places where the air pressure is high, are called high pressure systems.

A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation. Because of Earth’s spin and the Coriolis Effect, winds of a low pressure system swirl counterclockwise north of the equator and clockwise south of the equator. This is called cyclonic flow. On weather maps, a low pressure system is labeled with red L.

A high pressure system has higher pressure at its center than the areas around it. Winds blow away from high pressure. Swirling in the opposite direction from a low pressure system, the winds of a high pressure system rotate clockwise north of the equator and counterclockwise south of the equator. This is called anticyclonic flow. Air from higher in the atmosphere sinks down to fill the space left as air is blown outward. On a weather map, you may notice a blue H, denoting the location of a high pressure system.

How do we know what the pressure is? How do we know how it changes over time?  Today, electronic sensors in weather stations measure air pressure. These sensors are able to make continuous measurements of pressure over time. In the past, barometers were used and measured how much air pushed on a fluid, such as mercury. Historically, measurements of air pressure were described as “inches of mercury.” Today, meteorologists use millibars to describe air pressure.

Air pressure depends on temperature and density.

When you inflate a balloon, the air molecules inside the balloon get packed more closely together than air molecules outside the balloon. This means the density of air is high inside the balloon. When the density of air is high, the air pressure is high. The pressure of the air pushes on the balloon from the inside, causing it to inflate. If you heat the balloon, the air pressure gets even higher.

Answer:

not sure

gfghyn fesdf

Explanation:

Answer:

frequency✧C

wavelength✧A

wave speed✧D

wave period✧E

amplitude✧B

i'm not sure if they are all correct so sorry ✧

Answer:

Circulatory System

Explanation:

As soon as 5he digestive system has broken down the foods to their smallest unit, the circulatory system helps to move the nutrient to where they are needed.

Blood is a medium of transport in higher vertebrates and is being pumped by the heart and flows through network of capillaries. Blood also transport oxygen that helps in the breakdown of carbohydrates to produce energy and get rid of waste such as carbondioxide through the excretory system.

Answer: Prokaryotic cells lack a nucleus and membrane-bound structures. Eukaryotic cells have a nucleus and membrane-bound structures called organelles.

Hope this helps :)

Answer:

Option B is the answer, that is, proximity to major businesses who use flower shops.

Answer:

B

Explanation:

All other options are factors contributing to the progress of the business whereas the proximity of flower shops should not be of concern in such a situation.

Answer:

Enzymes lower the activation energy that is needed, making reactions happen at a lower temperature that they could without the enzyme. This speeds up the rate of reaction.

Explanation:

Answer:

they speed up the chemical reaction

Answer:

E. Confident

Explanation:

Holding eye contact, having firm movements and a strong voice are all clear indictators of a sense of self-confidence.

Answer:

I'm pretty sure it's e sry if I get it wrong

Answer:

A-2

B-4

C-1

D-3

Explanation:

In description A, the car is first moving at a constant speed, which means it will have a constant slope. Then, it stops, which causes a slope of 0. Finally, it moves in the opposite direction, which will cause a negative slope. The second graph has a positive, zero, and negative slope; therefore, it fits A.

Description B has a constant slope, a zero slope, and a higher slope. Graph 4 goes up normally, then stops, and finally goes steeper. This fits description B.

Description C has a constant and then a higher slope. Graph 1, increases steadily and then sharply increases; which fits C.

Description D has a constant and then a lower slope. Graph 3 increases fast but then flattens, which matches the slopes in the description.

Answer:

It's the last one

Explanation:

The grand canyon was formed by erosion of water. That is the only option with erosion of water for the grand canyon

Answer:

the fourth one.

Explanation:

grand canyon was carved out by ancient rivers which erodes the softer rock of the area, all of the Hawaiian islands are volcanic formations.

Answer: Invasive species can harm both the natural resources in an ecosystem as well as threaten human use of these resources. An invasive species can be introduced to a new area via the ballast water of oceangoing ships, intentional and accidental releases of aquaculture species, aquarium specimens or bait, and other means.

Answer:

I'm pretty sure the answers for this is D, C, and B.

Answer:

But in a molecule of DNA you can find four nitrogen-containing nucleobases: cytosine, guanine, adenine, and thymine. It also contains a sugar called deoxyribose and a phosphate group.

Explanation:

Answer:

It was formed around 4.5 billion years ago when something the size of mars smashed into the Earth, which made matter fly into orbit.

Answer:

You could expect to have a 90% heterozygous (Dd) and 10% (dd)

Explanation:

make a square chart and put either of the parents of either side, (top and left side then do you chart :)

Answer:

AAG GGU CUA AAA

it's U because RNA contain Uracil instead of Thymine

Answer:

AAG - GGU - CUA - AAA

Explanation:

This happens because in the RNA synthesis, Thymine is present in Uracil giving it a U symbol. The conversions between the bases go between Cytosine and Guanine, or Thymine (Uracil) and Adenine. Whenever you switch to the other strand, it becomes the opposite base for the other strand so they fit together perfectly in the chromosome or chromatid. Example: C - G contain opposite characteristics that fit so they only go together, Adenine or Guanine will not ever be present with either of those bases.

Answer:

Earth science.

Explanation:  

Fun fact: There is 5 branches of Earth science.

Hope this helps! ^^

A microscope enables people to magnify things up close that you cannot see with the human eye. Many people have found extraordinary things through the telescope, up to 6,500 times up close (world record microscope). They are used in almost every research center.

Answer:

Convection plays an important role in heat transfer inside this pot of water.

Explanation: i hope this is right

Answer:

Convection streams cause the impacts that can be seen in a skillet of water warming on a stove. The water at the foot of the container, closest to the burner, warms quickly and rises to the surface. Bubbles illustrate the disturbance of warmed water atoms, which circulate the warm until all the water is bubbling.

Explanation:

Have A Wonderful Day !!

Complete question:

In guinea pigs, the allele for short hair is dominant. All the guinea pigs are born short-haired.  If a second cross is made using these offspring and results are 3⁄4 short-haired while 1⁄4 are long-haired can you now determine the exact genotypes of the parents and if so what are they?

Answer:

The exact genotype of both the F2 parents is Ss, heterozygous for the trait hair length.

Explanation:

Due to technical problems, you will find the complete answer and explanation in the attached files

Answer:

a-youngest fossils

b-mammal fossils

c-first dinosaurs

d-first land plants

e-trilobites

f-oldest fossils

a-youngest fossils

b-mammal fossils

c-first dinosaurs

d-first land plants

e-trilobites

f-oldest fossils

Fossils generally helps in relative dating of rocks. The Trilobites are considered the oldest in this rock sequence when we apply the principle of superposition of strata. The principle states that "in an undeformed/undisturbed sequence of rock, the oldest is always at the bottom while the youngest is on top". This principle therefore explains why the Trilobites at the base are considered the oldest.

How is the layer of iridium used to tell the relative age of different rock strata and fossils" it can be said that rock strata and fossils can have there ages detected by following the layer of irudium over the newer ones recently dropped.

It is important to note that iridium is an element that has had its deep root on earth for the longest of times Because of this unending  deposition of iridium all over the earth. There is a particle of iridium on most rock strata and fossils allover the earth. Now rock strata and fossils can have there ages detected by following the layer of irudium over the newer ones recently dropped.

Therefore, a-youngest fossils

b-mammal fossils

c-first dinosaurs

d-first land plants

e-trilobites

f-oldest fossils

Learn more about youngest fossils on:

https://brainly.com/question/29596818

#SPJ2

Answer:

el sapo

Explanation:

Since many proteins share the same first two bases, the third base is the least important.

A codon is a three-nucleotide (DNA or RNA) sequence that forms a unit of genomic information encoding a specific amino acid or signaling the end of protein synthesis (stop signals).

There are 64 different codons, 61 of which specify amino acids and three of which serve as stop signals.

As a result of genetic code degeneracy, many amino acids share the third base and differ only in the first two bases, making the third base less important.

Stop codons are base triplets that do not code for amino acids; there are three stop codons: TAG, TAA, and TGA.

Thus, these tends to be less important for determining the corresponding amino acid.

For more details regarding codon, visit:

https://brainly.com/question/22991780

#SPJ2

Answer:

When mRNA is made from DNA it is called transcription

Each base triplet or Codon

Start, Stop, or an Amino Acid

these are amino acids that chain together to form Proteins

Hopefully I got all the blanks.  Maybe put underscores or something in next time.  Very Confusing

Answer:C

Explanation:

Answer:

The answer is C

Explanation:

Answer:

Explanation:

3. diffusion

4. facilitated diffusion

Answer:

PHOTOSYNTHESIS:

- Light energy is absorbed

- Glucose and oxygen are products

- Carbon dioxide and water are inputs

- Chemical energy is produced

CELLULAR RESPIRATION:

- Carbon dioxide and water are outputs

- Chemical energy is released

- Glucose and oxygen are inputs

- ATP, motion and heat energy are produced

Explanation:

- Photosynthesis is process by which autotrophic organisms synthesize their food (glucose) in the presence of sunlight. The process combines carbon dioxide (CO2) and water (H20) to produce glucose (C6H12O6) and oxygen (O2), by the energy derived from absorbing light. In the process, light energy is transformed to chemical energy (glucose). The reaction is as follows:

6CO2 + 6H2O → C6H12O6 + 6O2

- Cellular respiration is the opposite of photosynthesis as it involves the metabolic breakdown of glucose molecule to produce energy usable by the cell (ATP). Cellular respiration combines glucose and oxygen (inputs) to yield carbon dioxide and water (outputs). ATP, motion and heat energy are produced in the process. The equation is as follows:

C6H12O6 + 6O2 → 6CO2 + 6H2O

Answer: A solar eclipse is a portion of the earth that is engulfed in a shadow by a moon and sun interaction.

Explanation:

Answer:

Scientists usually use the potassium-argon method to date rocks that are older than about 1 million years. Uranium-238 is also used for radiometric dating. It has a half-life of 4.5 billion years. It decays to produce lead-206.

Potassium-40 is one radioactive isotope the geologist can use to learn the exact age of the rock, by the use of radiometric dating methods.

This is the process through which geologists can easily use to learn the exact age of the rock, it depends upon the natural radioactive decay of some elements such as potassium and carbon.

Geologists generally use the potassium-argon method to date rocks that are aged more than about 1 million years. Uranium-238 is also used for radiometric dating and has a half-life of 4.5 billion years. It decays to produce lead-206.

Radiometric dating is to find the date of the material such as carbon or rocks by labeling the radioactive impurities in a trace amount that is incorporated in it.

Therefore, Potassium-40 is used to know the exact age of the rock.

Learn more about radiometric dating, here:

https://brainly.com/question/14799339

#SPJ2