Answer:
Nov 23, 2020 · Levels of carbon dioxide (CO2) in the atmosphere hit a new record of 410.5 parts per million in 2019, and are expected to keep rising this year, the World Meteorological Organization (WMO) said in its annual Greenhouse Gas Bulletin on Monday. “We breached the global threshold of 400 parts per million in 2015.
Explanation:
i dont know this is the correct answer???/
Study the diagram of gametogenesis where egg cells and sperm cells
undergo meiosis I and meiosis II. Note the number assigned to each cell.
Identify the number of chromosomes in the different cells, represented
by a circle, by writing the symbol N for haploid and 2N for the diploid.
Write your answers on a separate sheet of paper.
A diploid cell undergoes meiosis to produce one egg and 3 polar bodies with 23 chromosomes each.
What happen during the egg formation?During egg formation in the ovary, Primary oocyte (diploid) having 46 chromosomes undergoes meiosis I to form one secondary oocyte and one first polar body.
Both the secondary oocyte and one polar body are haploid having 23 chromosomes. Both daughter cells then undergo meiosis II, the first polar body divides to give two polar bodies and the secondary oocyte divides by meiosis II to form one ovum.
Therefore, during egg formation in the reproductive system, a diploid cell (a primary oocyte) undergoes meiosis to produce one egg and 3 polar bodies with 23 chromosomes each.
To learn more about meiosis click here:
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What is the name of the supercontinent in Alfred Wegener’s continental drift hypothesis?
Answer:
Pangaea
Explanation:
Alfred Wegener proposed that the continents were once united into a single supercontinent named Pangaea, meaning all earth in ancient Greek. He suggested that Pangaea broke up long ago and that the continents then moved to their current positions. He called his hypothesis continental drift.
[tex]\sf\purple{Pangaea}[/tex] was the name of the supercontinent in Alfred Wegener’s continental drift hypothesis.
MORE:-Alfred Wegener is considered as the father of Continental Drift.This hypothesis was developed in the early part of the 20th century.Wegener proposed that the continents were once united into a single supercontinent named Pangaea. He also suggested that it broke apart long ago and the continents then moved to their current position.[tex]\large\mathfrak{{\pmb{\underline{\orange{Mystique }}{\orange{♡}}}}}[/tex]
This process of protein synthesis occurs similarly in most organisms due to the fact that it is the same universal ____ molecule that contains the instructions for it.
A. DNA
B. RNA
Answer:
A. DNA
Explanation:
This process of protein synthesis occurs similarly in most organisms due to the fact that it is the same universal DNA molecule that contains the instructions for it. So, option (A) is the correct answer.
The release of water from the of the cells caused the plant to wilt and droop. The in the plant's cells helps the plant to maintain its structure during this period of stress.
Answer:
Vacuoles are the first blank, while cell membrane is the second blank.
Explanation:
The release of water from the vacuoles causes a plant to wilt and droop; if the cells do not contain any water, the plant will wilt and droop.
Vacuoles are enclosed compartments in the solution that are filled with water, inorganic-organic compounds, and enzymes. It's a crucial organelle in the cell of a plant.
The cell wall, on the other hand, aids in the plant's structural preservation during times of stress.
Which statement about identical twins is TRUE?
A. They have identical DNA in all of their cells.
B. They are not genetically identical to each other.
Answer:
A. They have identical DNA in all of their cells.
Explanation:
Identical twins are also known as monozygotic twins. They result from the fertilization of a single egg that splits in two. Identical twins share all of their genes and are always of the same sex. In contrast, fraternal, or dizygotic, twins result from the fertilization of two separate eggs during the same pregnancy.
Answer:
A. They have identical DNA in all of their cells.
Explanation:
All of the cells in your body share the same DNA as was found in that first cell.
Question 3 of 10
What is altitude?
A. A certain distance north or south of the equator
B. The movement of a large mass of air
C. A mass of flowing ocean water
D. The measure of height above sea level
SUBMIT
Need ASAP pleaseeeee
Answer:
D.
Explanation:
base on my research..the correct answers is letter D
How does sugar leave the phloem?
is eczema recessive or dominant? explain why or how.
Answer:
When caused by CARD11 gene mutations, atopic dermatitis has an autosomal dominant inheritance pattern , which means one copy of the altered CARD11 gene in each cell is sufficient to cause the disorder.
Explanation:
pls mark brainlest
Cells created by meiosis can be
represented by which of the following?
A.2B
B.B
C.2N
D.N
Answer:
D. N
Explanation:
Meiosis is a kind of cell division which produces daughter cells that are genetically different from the parent cell and have a reduced number of chromosomes (by half).
Meiosis occurs only in reproductive cells to produce gametes. If a diploid (2n) cell undergoes meiosis, a haploid (n) daughter cell will result. This means that the chromosome number has been reduced by half in order to maintain the chromosomal number of the next generation.
explain the difference between a prokaryotic cell and a eukaryotic cell.
Answer:
Eukaryotic cells have a membrane-bound nucleus.
Prokaryotic cells do not. The nucleus is where Eukaryotic stores their genetic information.
The question is What serves as the ultimate control center of the body overseeing all communication among the organ systems?
Answer:
nervous system
Explanation:
the cns oversees every action our body does
please help me fill the squares
Answer:
that is basically it. I'm just adding works so I can send this
Which process produces genetically identical cells?
A. Meiosis
B. Mitosis
Answer:
mitosis produce genetically identical cells
Answer:
B mitosis i think .......
1.Condition in which one allele is dominant over
the other
Answer:
The condition in which an allele is dominant over another allele is dominance
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Answer: first qusetion the last one and the second the third
Explanation:
Answer:
I guess the answer for the first picture is no.A that is consume a wide variety of food.
how might a country run out of water
Answer
Along with decreasing rainfall comes rising temperatures. By 2050 the U.S. could be as much as 5.7°F warmer, and extreme weather events, such as heatwaves and drought, could be more intense and occur more frequently. As temperatures warm, evaporation increases, further decreasing water in lakes, reservoirs, and rivers.
Read the following selection and answer the question. On a September day in 1999, people began to notice that Lake Jackson in the Panhandle region of northern Florida was shrinking. Within a few days, it was almost gone. A sinkhole had opened beneath the lake and drained it, along with all of its inhabitants including fish and alligators. As aquifers lose water, rock and soil layers can become weaker and less capable of supporting overlying layers of earth and any human structures built upon them. In such cases, the land surface above may subside, or sink. Sometimes subsidence can occur locally and suddenly in the form of sinkholes, which are areas where the ground gives way with little warning. Once the ground subsides, soil becomes compacted, losing the porosity that enabled it to hold water. Recharging a depleted aquifer may therefore become more difficult. Sinkholes occur when?
Answer:
Sinkholes occur when water from the groundwater has been removed in excess.
Explanation:
Sinkholes are empty spaces in the ground that occur due to the landslide of large volumes of land, creating craters of different sizes. This landslide takes with it everything that is on top of it, such as houses, animals, streets and even entire buildings. While these holes can occur due to engineering flaws, the most common reason is the excessive use of groundwater, which creates an empty space in the interior of the soil and causes the earth to sag.
Why is geothermal energy considered a renewable resource
Answer:
A
Explanation:
Renewable resources are readily replenishable despite being used frequently or infrequently.
Mike has a problem with his testosterone. He is unable to produce enough. Which will most likely be affected by his inability to produce testosterone? Select two options.
Answer:
Fruits will be a great choice. Such as strawberries.
Explanation:
the organelle responsible for inspecting and packing protein?
mitochondria.
hope this helps!!
16.
What would happen if DNA and RNA did not operate according to principles of
directionality?
Answer:
RNA and DNA wouldn't be read in the proper order and would code for different proteins, with devastating consequences.
Explanation:
Directionality is important in DNA and RNA because it ensures that all transcription and translation occurs in an organized and uniform manner. Without directionality, the DNA and RNA machinery would get confused and read the nucleotides into the machinery backward, which would give the sequence an entirely different meaning.
PENN
Can someone pls check
Mitosis only
OPTION A
Mitosis is simply the process of cell division.
Meiosis is the process of producing gametes (eggs and sperm), which is important for sexual reproduction.
Research the discovery of stem cells and write a report describing your findings.
Dude...you just want someone to do it for you..? Or..?
the gradual development of a new organism from preexisting organisms is called
Answer:
Evolution
Explanation:
If there is mold on cream cheese, you should cut at least one inch around and below the moldy spot, making sure not to touch the mold with the knife
true
false
Answer:
false
Explanation:
the mold means that its expired and is probably growing. Throw it out.
It is not safe to eat
El pelaje negro de los borregos se debe a un alelo recesivo n frente a su alelo N que determina el pelaje blanco. Si cruzamos un individuo homocigótico blanco con un homocigótico negro, ¿de qué color serán los descendientes de la primera generación filial? GENOTIPO-FENOTIPO
Answer: Los descendientes de la primera generación filial tendrán un genotipo Aa y un fenotipo color blanco.
Explanation:
Un gen es un segmento de ADN que codifica para una proteína. Para cada gen, hay distintas versiones, conocidos como alelos. Por ejemplo, el gen que codifica para el pelaje tiene los alelos para el color blanco y para el color negro. Considerando que los organismos diploides tienen dos copias de cada gen (dos alelos), un alelo dominante solo necesita una copia para expresarse. Mientras que un alelo recesivo, necesita dos copias.
En este ejemplo, el borrego homocigota blanco tiene un genotipo (conjunto de genes) de AA ya que el color blanco es dominante y al ser homocigota indica que ambos alelos son iguales. El borrego homocigota negro tiene un genotipo de aa ya que se necesitan dos alelos recesivos para mostrar ese fenotipo (características visibles).
Los borregos producen gametos, los cuales son células sexuales (espermatozoide u óvulo) haploides, es decir que solo poseen un alelo de cada gen. Entonces el borrego AA solo produce gametos con genotipo A, mientras que el borrego aa solo produce gametos con genotipo a. Estos gametos son los que se cruzan, es decir que la descendencia solo puede tener un genotipo Aa (con un alelo de cada padre)
El genotipo Aa posee un alelo dominante A (que codifica para el color blanco) que enmascara los efectos de el alelo recesivo a (que codificaría para el color negro) Entonces, los descendientes de la primera generación filial tendrán un genotipo Aa y un fenotipo color blanco.
Which of the following structures are NOT involved in asexual reproduction?
A. Gametes B. Roots C. Stem D. Tuber
Answer:
Which of the following structures are not involved in asexual reproduction? Gametes.
Explanation:
So option A. Have a great summer. This is the correct answer.
The diagram shows an example of a food web. What are common traits of the prey shown that help them survive? What might happen if the rabbit population suddenly shrank due to disease?
Answer:
Adverse effect on the animals.
Explanation:
If the rabbit population suddenly shrank due to disease, it will adversely affected the population of eagle, fox and coyote because these animals depend on them through feeding. Eagle, fox and coyote feed on the rabbit so if the population of rabbit decreases, then there will be scarcity of food for these animals and as a result decrease occur in their populations so we can say that adverse effect occurs on the population of eagle, fox and coyote.
how does natural selection impact the way a population adapts?
Answer:
The organisms with the more desirable traits will survive and pass on their genes.
Explanation:
"Natural selection" is pretty much "survival of the fittest." This means that the organisms who have a better chance of surviving and reproducing will control the way a species adapts. For example, there may be a mutation in a species of moths that make their wings more brown instead of yellow (just threw a random color out there). Well, the moths born with the mutation that turns their wings brown will likely live longer and be able to reproduce more because they can blend in with their environment better. So, as a result, their mutation can get passed on and the species will adapt to have more moths with brown wings.
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