The human digestive system is approximately 900 cm long. Food is moved through the digestive tract primarily by

Answers

Answer 1

Answer:

El tubo digestivo mide aproximadamente once metros de longitud, se inicia en la cavidad bucal y terminan en el ano.En la boca empieza propiamente la digestión, los dientes trituran los alimentos y las secreciones de las glándulas salivales los humedecen e inician su descomposición química transformándose en el bolo alimenticio.

Explanation:


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HELP!!! DONT SEND NO LINK, IT DONT WORK!!!!

Explain why harmful mutations tend to disappear, while beneficial mutations become
widespread.

Answers

Harmful mutations do not accumulate over time because they reduce the reproductive success of an organism. These mutations would be dead before they can produce any offspring

Answer:

Harmful mutations don't accumulate over time because they reduce the reproductive success of an organism! These mutations would be dead before they can produce any offspring, so there's a slim chance of their genes being passed on. (So it's basically like survival of the fittest, the ones that survive usually have beneficial mutations because that's what keeps them alive lol) Beneficial mutations play a big role in evolution too!

Explanation:

I hope that cleared things up for you! pls give me brainliset <3

1. A cool piece of iron gets warm when a red-hot piece of iron is placed a few inches
away. How is heat transferred in this scenario?

Answers

Answer:

Convection currents in the air between the pieces of metal transfer all the heat. The air between the two pieces of iron emits thermal radiation that is absorbed by the cool iron.

There you go, hope this helped.

Heat energy is transferred from one matter to another through various modes and methods. A cool iron piece heats due to convection that transferred the heat from the hot iron.

What is convection?

Convection has been one of the modes of thermal heat transformation that uses matter to transfer the heat from higher to lower concentrations, unlike the radiation mode. The matter particles move from hot to lower temperatures.

The air present between the cold and hot iron piece acts as the medium by which the cold iron piece absorbs the heat transferred by the hot iron piece. This thermal energy is emitted and absorbed due to the difference in temperature.

Therefore, the process of convection facilitates the thermal heat transformation from hot to cold iron objects.

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Please Help!

What can you determine from the principles of cross-cutting relationships?
A. Layers that cut across the most other features are youngest.
B. In a given region, all layers of sediment form at the same time.
C. The layers of sediment on the bottom are the oldest.
D. Two different types of sediment will not cut across each other.

Science A P E X

Answers

Answer:

A. Layers that cut across the most other features are youngest.

Explanation:
Using the principles of cross-cutting relationships, you can determine the relative age of rocks found in the ground. The idea behind it is that the geologic feature which cuts another is the younger of the two features, and it had been around for 400 years. It's not very precise but it is good for determining relative age.

The Central Dogma of Biology describes a two-step the process of DNA-RNA-Proteins. Which process is being observed in the diagram below?

Answers

Protein Synthesis I’m pretty sure

The process shown in the given image is transcription. The correct option is 3.

What is transcription?

In genomics, transcription is the process of creating an RNA copy of a gene's DNA sequence. This copy, known as messenger RNA (mRNA), transports the protein information encoded in the gene's DNA.

The process of copying a segment of DNA into RNA is known as transcription.

Messenger RNA is created when segments of DNA are transcribed into RNA molecules that can encode proteins. Other DNA segments are copied into RNA molecules known as non-coding RNAs.

The process of copying DNA to RNA is known as transcription, and the process of using RNA to make proteins is known as translation.

Thus, the correct option is 3.

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Your question seems incomplete, the probable complete question is:

The Central Dogma of Biology describes a two-step the process of DNA-RNA-Proteins. Which process is being observed in the diagram below?

TranslationTransverseTranscriptionTranslocation

In the Galapagos Islands, there were many species of tortoises, woodpeckers and other animals. Why were the animals like the tortoises so different in appearances, when they lived on neighbor islands?

Answers

Answer:

The animals were different because there were things the animals need to adapt to in the Galapagos that may have changed their appearance. for example a bird may have a different shaped beak because they started to evolve so they could eat foods that were available to them on the island

Consider the skeleton. Which skeletal system is represented by the shaded portion of the skeleton ?

Answers

Answer:

appendicular skeleton.

Answer:C

Explanation:

CAN SOMEONE HELPW THIS PLS

Answers

Answer:

c

Explanation:

How does the issue of ozone depletion and remediation relate to the world’s current climate change issues? Can we apply any lessons learned to dealing with climate change?

Answers

HOW DOES THE ISSUE OF OZONE DEPLETION AND REMEDIATION RELATE TO THE WORLD’S CURRENT CLIMATE CHANGE ISSUES?

[tex] \red{✩}[/tex]The importance of the ozone layer is that it acts as a filter for Ultraviolet B radiation, without which this radiation would reach the surface of the planet, causing damage to living beings. ... Many of the gases that are causing ozone depletion also contribute to global warming.

CAN WE APPLY ANY LESSONS LEARNED TO DEALING WITH CLIMATE CHANGE?

[tex] \green{✩}[/tex]Yes, since we would improve the ozone layer and it would be rehabilitated

----------------------------------------------------------------------------------------------

[tex] \bold{BRAINLYMENTALMENTE}[/tex]

Which of the following represents a problem associated with greenhouse growing techniques?


increased cost of staple grains

infection proliferation in nursery stock

poor development in seedling stock

reduced production of leaf vegetables

Answers

Answer:

its B infection proliferation in nursery stock

Explanation:

got it right on edge

Considering the most important ecological issue of the future, what is the biggest challenge the world will face in its dedication to conservation and restoration in the future?

The number of species in an extinction vortex
Spread of disease and parasites via corridors
The amount of land and energy resources
The pressures of its growing population

Answers

Answer:

its the amount of land and energy resources or the pressure of its growing population.

Explanation:

It is likely that the biggest challenge the world will face in its dedication to conservation and restoration in the future will be the pressures of its growing population, which is the last option.

What is population growth?

As the population grows, there will be an increased demand for food, water, energy, and land, which will lead to habitat loss, deforestation, pollution, and climate change. These factors can exacerbate other ecological issues, such as the number of species in an extinction vortex and the spread of disease and parasites via corridors. Therefore, it is crucial to address the root cause of these problems by promoting sustainable practices and reducing our impact on the environment.

Hence, it is likely that the biggest challenge the world will face in its dedication to conservation and restoration in the future will be the pressures of its growing population, which is the last option.

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Why is ocean acidification dangerous?2-3 complete sentences

Answers

Answer:

Carbonate is important to marine life, especially those with exoskeletons and shells, who form their protective casings from carbonate. Ocean acidification reduces the amount of available carbonate, and can cause their shells to crumble and dissolve. Animals then have to spend extra energy either repairing their shells or thickening them to survive.

how did our solar system form ?

Answers

Answer:

Formation. Our solar system formed about 4.5 billion years ago from a dense cloud of interstellar gas and dust. ... When this dust cloud collapsed, it formed a solar nebula—a spinning, swirling disk of material. At the center, gravity pulled more and more material in.

WILL GIVE BRAINLISTTTT!!!! In what ways are mechanical, chemical and biological weathering responsible for changes in our environment?

Answers

Answer:

Mechanical weathering, also called physical weathering and disaggregation, causes rocks to crumble. Water, in either liquid or solid form, is often a key agent of mechanical weathering. For instance, liquid water can seep into cracks and crevices in rock. If temperatures drop low enough, the water will freeze.

Hope this helps

The result of this glacial action will be a

Answers

Answer: A

Explanation:

PRACTICE-PUNNET SQUARES
will make brainliest of answered​

Answers

Answer:

FF    Ff

FF    Ff

Explanation:

Brainliest Please!

what are the many forms of energy? how is energy either potential of kinetic

Answers

Answer:

The different types of energy include thermal energy, radiant energy, chemical energy, nuclear energy, electrical energy, motion energy, sound energy, elastic energy and gravitational energy.

You need energy to do any work, which is why the ability to do any work is energy. Read that again. Potential and kinetic energy are two forms of energy that can be converted into each other. Potential energy can be converted to kinetic energy and vice versa.

Explanation:

Which scenario would result in a decrease in population size, or a negative population growth?

Use this formula:
population growth = (birth rate + immigration) – (death rate + emigration)

0 individuals emigrate, 14 individuals die, 14 individuals are born, 14 individuals immigrate
40 individuals emigrate, 0 individuals die, 10 individuals are born, 28 individuals immigrate
12 individuals emigrate, 5 individuals die, 17 individuals are born, 0 individuals immigrate
19 individuals emigrate, 4 individuals die, 25 individuals are born, 0 individuals immigrate

Answers

Answer:

The third situation has the lowest amount of people with 0.

Explanation:

In this situation,

0 individuals emigrate, 14 individuals die, 14 individuals are born, 14 individuals immigrate.  Population growth = 14

In this one,

40 individuals emigrate, 0 individuals die, 10 individuals are born, 28 individuals immigrate   Population growth = 2

For this one,

12 individuals emigrate, 5 individuals die, 17 individuals are born, 0 individuals immigrate   Population growth = 0

Last one,

19 individuals emigrate, 4 individuals die, 25 individuals are born, 0 individuals immigrate   Population growth = 2.

20 points only real answers, please and thank you.
What are three crucial pieces of evidence that supports the claim for the Big Bang theory. Include a piece of evidence that relates to each of the following:
- Light spectra
- The motion of distant galaxies
- Composition of matter in the universe

Answers

Answer:

Three main pieces of evidence for the Big Bang theory are the red-shift of light, cosmic background radiation and types of elements.

Describe how each of Newton’s laws may be observable during a car trip.

Answers

According to Newton's first law, an object in motion continues in motion with the same speed and in the same direction unless acted upon by an unbalanced force. Any passengers in the car will also be decelerated to rest if they are strapped to the car by seat belts. Also if a car was going straight but another car (unbalanced force) bumps into it causing the motion of the car to change.

If the seat belts on any passengers are fastened, the vehicle will also slow down until everyone is at rest. Additionally, if a car was moving straight when another car struck it, the direction of the car would shift.

What are newton's three law of motions ?

According to the first law, until a force acts on an item, it will not alter its motion. According to the second law, an object's force is determined by multiplying its mass by its acceleration. According to the third law, when two objects interact, they exert equal-sized and opposite-direction pressures upon one another.

There's a fourth law , it states that every object tends to remain in the state it is in right now. We refer to this propensity as inertia. Every object tends to remain in the state it is in right now.

Therefore, If the seat belts on any passengers are fastened, the vehicle will also slow down until everyone is at rest (First law) . Additionally, if a car was moving straight when another car struck it, the direction of the car would shift (Third law).

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How are cell membranes and cell wall similar in plant cells?
A. Both are the energy factories.
B. Both are used for storage of nutrients.
C. Both are the control centers of the cell. .
D. Both are transporters of waste materials.


HELP PLEASEEE

Answers

Answer:

B

Explanation:

both are used for storage of nutrients

B should be the answer

A dollar weed species has become resistant to a particular weed killer. What happens to the percentage of dollar weed offspring that survive weed killer treatments in future generations?

Answers

Answer:

A. The percentage will increase

Explanation:

If the species is becoming resistant to the weed killer, natural selection will cause future generations to become resistant as well, therefore the percentage of resistant dollar weed will increase. Also I took the test lol.

Name this Molecule HELP ASAP PLEASE I WILL GIVE BRAINLIEST​

Answers

copper gallium I think

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Answers

Answer:

The red Gaints

Explanation:

You can see in the far right that they are the closest to the coolest Temperture. if you look down at the line, you will see the temperatures and their numbers, blue is the hottest, while white is in between, and red is the coolest.

Answer:

Red Gigants

Explanation:

Red stars are the coolest just because the blue gigants are blue dosen't mean they are the coldest if you see the temp in the bottom line blue gigants are the highest in temp and red gigants are in the lowest temp

When the homeostasis of the body is disrupted which of the following can occur?

a.)hypothermia
b.)shock
c.)shortness of breath
d.)increase in blood pressure
e.)none of the above
f.)all the above​

Answers

Answer: I think it's (f) all of the above.

Explanation

Because It regulates temperature, glucose, toxins, blood pressure, and pH.

20 points

Why is an imbalanced high population of moose on the island seen as a

problem? *

If the moose population continues to grow, they will run out of space on the island and

take over the wolf niche.

If the moose population is unchecked, the local balsam fir population will be

decimated, leaving a barren ecosystem.

It was not seen as a problem; science believes we should let the ecosystem run its

course and dies out.

It was not seen as a problem because the absence of wolves on the island ensured

the future of the ecosystem.

Answers

Answer:

If the moose population is unchecked, the local balsam fir population will be  decimated, leaving a barren ecosystem.

Explanation:

The imbalanced high population of moose on the island seen as a  problem because it decreases the local balsam fir population which is a major food source for the moose in the winter season. If the population of moose is grow higher then the scarcity of food sources occurs and the food source will be eliminated from that ecosystem. If the moose population increases the local balsam fir population will be eliminated from the ecosystem and the land will remain barren or without vegetation.

Question 1 of 6
In which region is there most likely to be a volcano?
Eurasian plate
D
B
North
American
plate
BAD
Pacific
plate
Pacific
plate
African
plate
Indo-
Australian
plate
South
American
plate
Antarctic plate

Answers

Answer:

the correct answer is D :)))!!

If someone has a heritable trait, they might pass it to their offspring.

true or false ?

Answers

True fish Nicolas info music

Explain how and why you would conduct a study to determine if this bone can be used to determine sex

Answers

Answer:

The pelvis is the best sex-related skeletal indicator, because of distinct features adapted for childbearing. The skull also has features that can indicate sex, though slightly less reliably. Males have a square jawline and the line between the outer edge of the jaw and the ear is vertical. Conversely, in females the jaw is much more pointed and the edge of the jaw slopes gently towards the ear.

Explanation:

Biodiversity true or false?

1) Relationships between different species are very important.
2) An environment with 2 million corn plants is more biodiverse than one with 100 corn plants, 25 butterflies, and several other animals.
3) Biodiversity refers to the variety of life in an ecosystem.
4) High biodiversity helps to ensure resilience and stability. In other words, ecosystems with high biodiversity are usually healthier.

Answers

Answer:

All are true besides (2)

Explanation:

diversity is variety of things, not mass of them

Which organelle is a fluid-filled structure designed for storage? *
A. Ribosome
B. Vacuole
C. nucleus
D. mitochondria



HELP ME PLEASEEE

Answers

Answer:

vacoule in plants cell only and it stores food

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