Answer:
Four conditions are needed for natural selection to occur: reproduction, heredity, variation in fitness or organisms, variation in individual characters among members of the population. If they are met, natural selection automatically results.
:
Why do prokaryotes not undergo mitosis?
The DNA of prokaryotes is not enclosed within a membrane, and is instead localized to a region called the nucleoid. This DNA acts as the prokaryote’s only chromosome, so the process of DNA replication is much quicker. After DNA replication, the original chromosome and its copy seperate. A cleavage furrow forms between the cell, the cell eventually pinches in half, and two identical daughter cells, each with an identical chromosome, are formed.
match the descriptions to the photos
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Answer:
sorry the words is really just
too tiny
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Which statement describes Hutton and Lyell’s work?
A) Both Hutton and Lyell studied fossils and realized that fossils of extinct animals resemble some modern animals.
B) Both Hutton and Lyell claimed that Earth was very old and changed very slowly over time.
C) Both Hutton and Lyell hypothesized that an organism's traits changed based on what the organism did or needed. The improved trait was then passed on to its offspring.
D) Both Hutton and Lyell claimed that human population grew over time and was checked by factors such as war, plague, or famine.
Answer:
d is your answer
Explanation:
The answer is c. Right?...
Answer:
yes
Explanation:
it depends on how strong your parents geneticsare
Answer:
Yes because you get genes from your parents
Explanation:
how many fingers do you have?
Answer:
10
Explanation:
Answer:
10
Explanation:
What is the other vacuole a paramecium has and what is its purpose?
Answer:
Vacuoles take on specific functions with a paramecium cell. Explanation:
Food vacuoles encapsulate food consumed by the paramecium. They then fuse with organelles called lysosomes, whose enzymes break apart food molecules and conduct a form of digestion.
What are the 2 ways plants use energy?
Answer:
What are the 2 ways plants use energy?
Explanation:
This process uses solar energy to convert carbon dioxide and water into energy in the form of carbohydrates. It is a two-part process. First, the energy from solar radiation is trapped in the plant. Secondly, that energy is used to break down carbon dioxide and form glucose, the main energy molecule in plants.
Answer: Plants use solar energy (or energy from the sun) to change water and carbon dioxide into a sugar called glucose. Another source of energy is Chemical energy.
Explanation: Or in short terms. Solar and chemical
How can gravity change the landscape?
A. It can create a mountain with extra soil and sediment.
B. It can carve U-shaped valleys.
C. It can pull sediment down in a landslide.
D. It can form canyons by pushing out soil.
Answer:
C it can pull down sediment and form landslides
Explanation:
It can't build up a mountain, it can't move soil to the side and it can't shape things. It can only pull things down
Do plants have to do cellular resperation? why or why not?
Explanation:
Like all other organisms, plants require energy to grow and thrive in their environment. The process of cellular respiration allows plants to break down glucose into ATP.
Although plants use photosynthesis to produce glucose, they use cellular respiration to release energy from the glucose.
Please hurry
Base your answer on the passage below
Avian (Bird) Flu
Avian flu virus H5N1 has been a major concern recently. Most humans have not been exposed to this strain of the virus, so they have not produced the necessary protective substances. A vaccine has been developed and is being made in large quantities. However, much more time is needed to manufacture enough vaccine to protect most of the human population of the world.
Most flu virus strains affect the upper respiratory tract, resulting in a runny nose and sore throat. However, the H5N1 virus seems to go deeper into the lungs and causes severe pneumonia, which may be fatal for people infected by this virus.
So far, this virus has not been known to spread directly from one human to another. As long as H5N1 does not change to another strain that can he transferred from one human to another, a worldwide epidemic of the virus probably will not occur.
3.Identify one event that could result in the virus changing to a form able to spread from human to human.
As the virus goes from bird-to-bird and bird-human. The virus may become unstable enough and mutate like crazy. One of those mutations could be like lethality or severity, But more important, human-human spreading.
How does the use of fertilizer affect the nitrogen cycle?
God bless all and stay safe! :) :)
Answer:
Nitrogen from fertilizers sinks into soils, often creating conditions that favor the growth of weeds rather than native plants. Nitrogen then washes into waterways, causing a surplus of nutrients, a situation called eutrophication.
Explanation:
hope this helped!
Answer:
Nitrogen from fertilizers sinks into soils, often creating conditions that favor the growth of weeds rather than native plants.
Explanation:
READING CHECK - Determine Central Ideas: How are internal and external fertilization alike and different?
Answer:
They are the same because they are both fertilised
Explanation:
Archaeopteryx is an intermediate fossil that has characteristics of both dinosaurs and early birds. This is evidence for evolution because it shows *
A. The change in species over time
B. Cross breeding between organisms
C. The development of adaptations
D.The ability of a species to take on the characteristics of another
Answer:
C
Explanation:
i hope is help
Which of the following statements accurately describes the relative age of the fossils in these rock layers?
Answer:
The answer is C
Explanation:
The deeper the rocks are the older they are. So this means that the brown rocks are automatically older. Looking at this chart it shows the ages and time of these rocks and the brown rocks are in between 520 MYA and 545 MYA so then we can conclude that the brown trilobite fossils are 532 MYA
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Gene therapy is a form of__________
Answer:
genetic engineering
Linguists know how people began to speak.
A. true
B. false
Answer: False, they have theories but nothing is certain.
Explanation:
I need some help with my science test. I don't really understand it. You don't need to explain it or anything. I just need an answer. I'm giving brainless
Which of the following best matches a part of a living cell with the function it performs?
A. Cytoplasm: green structure inside plant cells
B. Nucleus: green structure inside plant cells
C. Cytoplasm: directs all of the cell's activities
D. Nucleus: directs all of the cell's activities
Most electrical companies combust the stored area energy of fossil fuels to heat water. This heated water has area energy use to spin turbines which spin magnets to create area energy.
Answer:
1 ,4 ,5
Explanation:
List different technologies that improve our
understanding of cells and how they
function.
Answer:
Technology such as lenses, magnifying glasses, and microscopes had an impact on the development of the cell theory. Below are some examples of how such technologies contributed to the cell theory. Robert Hooke is accredited with observing the first cells in 1665.
Explanation:
What type of currents involve the lateral movement of water in the oceans?
Group of answer choices
Surface currents
Sidewellings
Upwellings
Downwellings
Answer:
c. upwellings
Explanation:
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Match these items.
1 .
June 21
winter solstice
2 .
23 ½° south of equator
spring equinox
3 .
23 ½° north of equator
summer solstice
4 .
September 23
fall equinox
5 .
December 21
Arctic Circle
6 .
23 ½° south of the North Pole
Antarctic Circle
7 .
23 ½° north of the South Pole
Tropic of Cancer
8 .
March 21
Tropic of Capricorn
9 .
imaginary line for earth's rotation
axis
10 .
365 ¼ days
revolution of the earth around the sun
Answer:
1. The winter solstice occurs during the hemisphere's winter. In the Northern Hemisphere, this is the December solstice (usually 21 or 22 December) and in the Southern Hemisphere, this is the June solstice (usually 20 or 21 June).
2. The Sun lies directly over 23 1/2o south. Occurring during the astrological sign of Capricorn, 23 1/2o south latitude is called the Tropic of Capricorn. Continuing to March 21st (i.e. spring equinox) the Earth has positioned itself similar to that which occurs in September, only on the other side of the Sun.
3. June 21
The latitude of 23 ½ degrees north is known as the Tropic of Cancer, and it is the northern boundary of the tropics. Question: On June 21, the subsolar point is at about 23 1/2 degrees north.
4. In 2020, the Sun will cross the celestial equator from north to south on September 22, at 13:30 UTC. Because of time zone differences, the equinox will take place on September 23, 2020 at locations that are at least 10:30 hours ahead of UTC.
5. December 21st was the Winter Solstice in the northern hemisphere. That's the day when Earth's north pole was pointed completely away from the Sun. If you lived north of the Arctic Circle, like Santa Claus, you would have experienced 24 hours of darkness. It was the day Sun never rose.
6. The farthest south that the sun's rays shine directly is latitude 23 ½ degrees south, the Tropic of Capricorn. This is the southern boundary of the tropics. On this day, the area north of the Arctic Circle gets no sunlight, and the area south of the Antarctic Circle gets 24 hours of light.
7. Tropic of Capricorn, 23 1/2 degrees S. Tropic of Cancer, 23 1/2 degrees N. Arctic Circle, 66 1/2 degrees N. Antarctic Circle, 66 1/2 degrees S. North Pole, 90 ...
8. Tropic of Capricorn: 23.5 degrees south of equator. ... at midday on December 21 is 90-36-23.5 = 30.5 degrees; on March 21
9. equator
The equator is an imaginary line drawn right around Earth's middle, like a belt. It divides Earth into the Northern Hemisphere and the Southern Hemisphere. Another imaginary line drawn straight through Earth connecting the North Pole to the South Pole is Earth's axis of rotation.
10. A day is the amount of time it takes a planet to finish one rotation on its axis. It takes Earth approximately 365 days and 6 hours to orbit the Sun. It takes Earth approximately 24 hours — 1 day — to rotate on its axis. So, our year is not an exact number of days.
Explanation:
Answer:
Antarctic Circle - 23 ½ degrees north of the South Pole
solstice - Latin root word meaning sun stands still
June 21 - summer solstice
September 23 - fall equinox
Tropic of Capricorn - 23 ½ degrees south of the equator
Arctic Circle - 23 ½ degrees south of the North Pole
March 21 - spring equinox
Tropic of Cancer - 23 ½ degrees north of the equator
equinox - Latin root word meaning equal night
December 21 - winter solstice
Explanation: At this time, the sun's closest and most direct rays strike the earth along a line 23½ degrees south of the equator. This line is called the Tropic of Capricorn. As you can see in the diagram, an area around the North Pole will not receive sunlight at all. The imaginary line of the Arctic Circle encloses this area. The Arctic Circle is only 23½ degrees south of the North Pole.
Around the South Pole lies an area which has twenty-four hours of daylight on December 21. This area is bounded by the Antarctic Circle, which is 23½ degrees north of the South Pole.
The equator is now south of the most direct rays of the sun, and the sun shines straight down on the imaginary line called the Tropic of Cancer, which lies 23½ degrees north of the equator. Summer is the season in the Northern Hemisphere, when winter is the season south of the equator. People who live in the Southern Hemisphere have their longest night of the year of this date, and those in the north have their shortest night.
(The word solstice comes from the Latin root words which mean "sun" and "to make stand still.")
(The word equinox comes from the Latin root words which mean "equal," and nox, which means "night.")
How does the paramecium release its waste?
Answer:
The paramecium uses its cilia to sweep the food along with some water into the cell mouth after it falls into the oral groove.
Explanation:
yes
Answer:
the digested food goes to the cytoplasm and the vacuole gets smaller when the vacuole reaches the pore the remaining undigested waste is removed
Explanation:
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Base your answer on the passage below
Smokers are passing down problems to future generations. Men who smoke and drink alcohol could be endangering the health of their future children and grandchildren. Toxic chemicals in cigarettes and alcohol are thought to cause changes in the DNA, which are passed down via the sperm to future generations.
4.Explain how smoking and drinking alcohol by males can affect the development of an embryo.
Answer:
Prenatal exposure to smoking and alcohol increases the risk for Sudden Infant Death Syndrome Physiological changes associated with these exposures are not well studied. Full-term infants were tested within the first 3 days of life.
Explanation:
Answer:
Smoking may also increase a baby's risk of various birth defects, including cleft lip, cleft palate, and clubfoot. Even more frightening is research suggesting that babies whose mothers smoked during pregnancy are more likely to die of sudden infant death syndrome
Explanation:
Give an example of a specific joint in the human skeletal system.
Please help
Answer:
Finger Joints and your jaw
Explanation:
Answer:
Allowing slight movement (called amphiarthroses) include the distal joint between the tibia and the fibula and the pubic symphisis of the pelvic girdle. Joints allowing full movement (called diarthroses) include many bone articulations in the upper and lower limbs
Explanation: Just a little extra facts;)
What phenomena occur due to these plate movements?
2 sentences or 1 if it explained well
Describe two ideas which influenced Darwin's thinking leading up to his idea of natural selection. *
Latitude (more than longitude) is closely related to:
time
the poles
climate
Greenwich
What are the two types of anaerobic respiration? Describe the two in one paragraph.
Answer:
The two main types of anaerobic respiration are alcoholic fermentation and lactic acid fermentation.These strategies of respiration occur while the amount of oxygen available is simply too low to guide cardio respiratory.Alcoholic fermentation converts glucose into ethanol. In alcoholic fermentation, glucose is broken down via glycolysis, and two ATP molecules are released in the method. The pyruvic acid molecules produced for the duration of glycolysis destroy down into ethanol and carbon dioxide. In animals, the technique of lactic acid fermentation, further, happens after the glycolysis process. Pyruvic acid is changed into lactic acid, and muscles is damaged down through lactic acid.
Explanation:
The two types of anaerobic respiration are alcoholic fermentation and lactic acid fermentation.
Explain anaerobic respiration
Some microbes, including yeast, can ferment alcohol. This procedure transforms glucose into ethanol and carbon dioxide. Through a sequence of biochemical processes, glucose is turned into pyruvate, which is then transformed into ethanol.
On the other hand, lactic acid fermentation takes place in different types of bacteria and human muscle cells. Lactic acid is produced during lactic acid fermentation from glucose. When there is a shortage of oxygen, such during vigorous exercise when muscle cells are unable to receive enough oxygen for aerobic respiration, this process takes place. Although lactic acid fermentation results in an accumulation of lactic acid, which can contribute to muscle discomfort and tiredness, it also helps renew the NAD+ molecules required for glycolysis to proceed.
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What is the optimal temperature for photosynthesis?
Answer:
The optimum temperature range for photosynthesis is 35–40ºC.
Explanation:
Answer:
The optimum temperature range for photosynthesis is 35–40ºC.
Explanation: