PLS HELP NOW dont have to answer all

Answer:

A. True

Explanation:

Yeah, we don't know what the first life form was or how it came to be, but the process of reproduction with VARIATION over billions of years is responsible for the diversity of life on Earth today.

Answer:

Relative Humidity- Low

Air tempurature-cold

Air Pressure-low

Explanation:

High pressure, warm temperatures, and high humidity are  factors that creates snow.

Snow and/or ice formation requires temperatures below freezing, both in the atmosphere and close to the ground.

Something that will induce the moist air to rise, forming clouds and precipitation, moisture, produces precipitation and clouds.

Water that has frozen solidly is snow, and the atmosphere (layer of gases around Earth) contains water in the form of vapor (gas). When there is a lot of vapor present, clouds develop, fill up with water droplets, and eventually begin to rain.

Therefore, when a very cold water droplet freezes onto a pollen or dust particle in the atmosphere, a snowflake starts to form.

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Answer:

Hi so the answer is that Gravity pulls the gas molecules towards Earth's center. The pull of gravity is stronger closer to the center at sea level. Air is denser at sea level where the gravitational pull is greater. Gases at sea level are also compressed by the weight of the atmosphere above them.

Explanation:

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Answer:

44- object 2

45- objects 1 and 4

Explanation:

44- object 2 push force is higher one the left then on the right

45- object 1 cancel eachoher because they have the same push force as eachoher and object 4 don't move at all because they don't have any push force on either side

Answer:

A or "The blood would not be able to carry oxygen."

Explanation:

"Red cells contain a special protein called hemoglobin, which helps carry oxygen from the lungs to the rest of the body and then returns carbon dioxide from the body to the lungs so it can be exhaled. Blood appears red because of the large number of red blood cells, which get their color from the hemoglobin."

https://www.hematology.org/education/patients/blood-basics#:~:text=Red%20cells%20contain%20a%20special,their%20color%20from%20the%20hemoglobin.

Answer:

epigenetics

Explanation:

Epigenetics is the study of how gene expression is turned on and off and which considers the interactions between DNA, RNA, proteins, and the environment .

Epigenetics is the study of how your behaviors and environment can cause changes that affect the way your genes work.

Several lifestyle factors like diet, obesity, physical activity, tobacco smoking, alcohol consumption, environmental pollutants, psychological stress, and working on night shifts.

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Answer:

An external stimulus is a stimulus that comes from outside an organism and causes a reaction. ... Learned behavior is a response to a stimulus that an animal was taught. Being able to read and write are examples of learned behavior, because it is not something you are born able to do.

Explanation:

Answer:

Scientists can determine the size of DNA fragments through a process known as gel electrophoresis. ... Large DNA molecules move slower and can be observed at the top of the gel, whereas smaller DNA fragments move faster and are seen at the bottom of the gel.

Answer:

A. TRUE

Explanation:

Gene expression establishes that genes will be turned on to build a protein.

The feature of stem cell which enable them to replace cell in tissues are that they can divide indefinitely to generate new cells and they can convert into the different types of cells that make up the body as they divide.

A stem cell is a cell that has the unique capacity to grow into different types of cells in the body.

They may be utilised in the future to replace cells and tissues that have been damaged or destroyed owing to illness.

Stem cells are classified into three types which are Embryonic stem cells, Adult stem cells, Induced pluripotent stem cells.

Embryonic stem cells provide new cells to an embryo as it grows and develops into a newborn.

Adult stem cells generate new cells as an organism matures and replace damaged ones.

Induced stem cells are stem cells created in the laboratory by scientists.

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Answer:

A

Explanation:

They live on larger islands so they need to evolve to survive better on them.

The giant iguana a good example of Charles Darwin's theory of adaptive radiation, or the way a species adapts to its environment is Giant iguanas live on the largest island in the Galapagos.

The benefits of flattened tails are that or the difference in the tail shape is because Flattened tails are better for swimming than rounded tails. This is due to the difference in habitats of the marine and inland iguanas.

By natural selection, the nature of the species gradually changes to became adapted to the niche.This is due to natural selection.The marine iguanas of the Galapagos Islands feed on seaweed and algae. Marine iguanas have flattened tails while other species of iguanas that live inland on the Galapagos and on the South American mainland have rounded tails.

Therefore, The giant iguana a good example of Charles Darwin's theory of adaptive radiation, or the way a species adapts to its environment is Giant iguanas live on the largest island in the Galapagos.

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Answer: D) Placenta

The placenta helps bring nutrients towards the fetus.

Answer:

The correct answers is letter D.

Explanation:

Base on my research Weathering of rocks or Weathering loosen of rocks are examples of a glacial formation

Answer:

it's d the answer they has ask me that cuestión ay school

Answer:

China, Russia, Kazakhastan, Mexico, Nimibia, Greenland, South Africa, Canada, Australia

Answer:

Plant store water and other essential nutrients in the vacuole.

Explanation:

Plant store water and other essential nutrients in the vacuole.

Herbal medicine is defined as the medicine which is acquired from the various parts of the plants such as flowers, roots, shoots, and leaves. Herbal medicine are costly in compare to normal medicine and because there production is limited and there will be no side effect of herbal medicine in compare to allopathic medicine.

The main difference between herbal medicine and allopathic medicine is that the allopathic medicine is formed from the active or particular part of the plant but in herbal medicine whole plant parts are utilised.Herbal medicine are costly in compare to normal medicine and because there production is limited and there will be no side effect of herbal medicine in compare to allopathic medicine.

Therefore,Plant store water and other essential nutrients in the vacuole.

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Answer: a. what life may have been like before the evolution of photosynthesis

Explanation:

The mid-Cayman rise is an area that has little light coming in but still has life in it.

Plants are able to provide food for themselves and the rest of us by using photosynthesis to make food. Photosynthesis uses sunlight to make this food.

One would think that photosynthesis was around for as long as plants were around but this is not the case. Life on earth had existed long before photosynthesis became a valuable process to plants.

There is therefore curiosity as to how this life fed itself without using photosynthesis and this is why the life in the mid-Cayman is being explored. The way the life makes food there in the absence of light will shed light on how plants made food before photosynthesis.

Answer:

A

Explanation:

Answer:

Schizophrenia and developmental disorders are traced genetically, and the gene will be found in the biological parents of the person with either schizophrenia or developmental disorders.

Explanation:

Although Schizophrenia can be triggered by environmental factors, or the 'nurture' of childhood development, a person who is not predisposed genetically to schizophrenia will not get the psychological disorder. The same is to be said about developmental disorders such as Autism and ADHD, it is hereditary.

For citation of evidence, I recommend talking about prenatal development, and how toxic substances can alter the development of a fetus, which is proven to lead to some developmental disorders, such as Fetal Alcohol Syndrome.

Answer:

Schizophrenia and developmental disorders are genetically connected, and the gene will be found in either the individual's biological parents or the person suffering from schizophrenia or developmental abnormalities.

Explanation:

Answer:

D the rate of growth will slow down by 2100

Explanation:

Sorry if it’s wrong

World's population growth rate will slow down by 2100 in future.

Hence, the correct option is D.

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Answer:

C - ao desenvolvimento de ovos depositados por borboletas.

Explanation:

Antes de responder a sua pergunta, eu preciso te explicar que esse não é o servidor brasileiro e sim o servidor dos EUA, você deve ter percebido que toda a linguagem do site esta em inglês. Isso significa que você só deve postar perguntas em português no campo "World Languagens" mesmo que a sua pergunta seja de biologia como essa. Caso você não faça isso, a sua pergunta pdoe ser excluída, sem ser respondida.

As lagartas que surgem nas espigas de milho, são resultado do ciclo de vida da lagarta e refere-se ao momento em que os ovos depositados nas plantas de milho pelas borboletas se chocam, liberando as lagartas, que se desenvolverão e virarão novas borboletas.

É impossivel que um grão e milho vire uma lagarta, ou que o sabubo apodrecido pode gerar lagartas. Além disso, o ´processo de geração espontanea é uma teoria cientifica invalida e que não deve ser considerada.

Answer:

the roots are weak

Explanation:

because it can’t hold its weight

Option B: differential reproduction

Answer:

b:differential reproduction

Explanation:

When individuals leave more offspring than other individuals.

Answer:

- Alelos:  

Locus 1: A (alto); a (enano)

Locus 2: B (púrpura); b (blanco)

- Cruzamiento parental: AABB  x aabb

Genotipos F1: AaBb

- Cruzamiento F1: AaBb x AaBb

Fenotipo: 100% plantas altas púrpuras

- Genotipos F2:  AABB (1/16); Aabb (1/16); aaBB (1/16); aabb (1/16); AaBb (4/16); AABb (2/16); aaBb (2/16); AaBB (2/16); Aabb (2/16)

- Fenotipos F2: 9/16 A-B- (altas púrpuras); 3/16 A-bb (altas blancas); 3/16 aaB- (enanas púrpuras); 1/16 aabb (enanas blancas)

Explanation:

Un cruzamiento dihíbrido refiere a un tipo de cruzamiento entre dos parentales que difieren para  dos pares de alelos (AABB x aabb). Si consideramos dos loci de dominancia completa, un cruzamiento dihíbrido producirá una F1 heterocigota para ambos genes donde la progenie expresará ambos rasgos dominantes. Como resultado de la distribución independiente expresada en la segunda ley de Mendel, La F2 de este tipo de cruzamiento producirá un proporción fenotípica 9:3:3:1; es decir 9 individuos con ambos rasgos dominantes (A-B-), 3 con el rasgo uno dominante (A-bb), 3 con el rasgo dos dominante (aaB-) y 1 con ambos rasgos recesivos (aabb).