Answers
Answer:
B
Explanation:
Crossing over is the process involved during meiosis of two chromosomes sharing genetic information with each other from each parent. This happens so the two daughter cells or sister chromatids have a variety of genetic information and so they are not completely identical. This leads to genetic diversity or variation.
Related Questions
Which two characteristics describe the most stable ecosystem on Earth?
a. They are near the poles
b they are near the equator.
c. They have high biodiversity
d they have few seed plants
Answers
Answer:
They have high biodiversity
High at the equator
Explanation:
This is because a stable ecosystem is the one that occur at equilibrium and have the ability to resist any form of resilience or disturbance and still grow fast. A stable ecosystem have high biodiversity because that are comprises of different plants and animals that are able to live and survive. Species diversity are more at the equator than at than at the poles.
The table shows data about abiotic factors of streams in two different watersheds.
In general, a stream with a lower temperature and more neutral pH tends to be healthier. Based on these
criteria, which watershed contains the healthier stream?
Select one:
Watershed 2
Both streams are equally healthy.
There is not enough data provided to answer the question.
Watershed 1
Answers
Answer: b
Explanation:
Based on these criteria, the watershed that contains the healthier stream is, that both streams are equally healthy. The correct option is B.
What are abiotic factors?An abiotic factor is a non-living component of an ecosystem that influences its surroundings. Temperature, light, and water are all components of the terrestrial environment.
Abiotic elements in a marine ecosystem include salinity and ocean currents. Abiotic and biotic forces interact to form a distinct ecosystem. Abiotic influences are found in all non-living components of an ecosystem.
They are often made up of both physical and chemical components. Abiotic factors are nonliving components of an ecosystem that influence the environment. Temperature, light, and water are among the examples. Abiotic elements in a marine ecosystem include salinity and ocean currents.
Therefore, the correct option is B. Both streams are equally healthy.
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Data Table 1.
Dish #1 (light) Dish #2 (dark)
Green seedlings Yellow seedlings Green seedlings Yellow seedlings
Day 1
Day 2
15. Place both dishes in the light and do not cover.
16. Recount the seedlings again the next two days.
17. Record your answers in the data table provided. (Click here to print out Data Table 2)
Data Table 2.
Dish #1 (light) Dish #2 (dark)
Green seedlings Yellow seedlings Green seedlings Yellow seedlings
Day 3
Day 4
% yellow seedlings = #yellow seedlings divided by (# yellow seedlings + # green seedlings) x 100
Results Table 1.
Dish #1 (light) Dish #2 (dark)
% Yellow seedlings % Yellow seedlings
Day 1
Day 2
Results Table 2.
Dish #1 (light) Dish #2 (dark)
% Yellow seedlings % Yellow seedlings
Day 3
Day 4
Answers
Answer:
Explanation:
it makes no sence
explain how the hydrosphere and atmosphere are related.
Answers
Answer:
Water circulates in a cycle across the hydrosphere. Clouds gather water, which then falls to Earth as rain or snow. Rivers, lakes, and seas store this water. Then it evaporates back into the atmosphere, restarting the loop.
Explanation:
Answer:
The hydrosphere is the part of Earth were all the water is contained.
The atmosphere is the part of Earth were all the gases are contained.
These two are related because the hydrosphere is inside the atmosphere.
The hydrosphere goes down below sea level, because of several trenches and other holes like the Mariana trench. The hydrosphere also goes around 20 kilometres in the air because of clouds.
What organisms can be found in a pond or a creek?
Answers
Answer:
Raccoons, ducks, geese, and swans visit ponds. There are many smaller animals as well. Frogs, toads, and many insects begin their lives in ponds and live nearby after they are grown. Turtles, snakes, rats, salamanders, worms, and spiders can also be found
How much DNA is found in a
cell's nucleus?
A. 3 inches
B. 3 feet
C. 3 meters
D. 3 miles
Answers
Answer:
C
Explanation:
Answer: C. 3 meters
Explanation:
Cells from a squirrel are considered eukaryotic and bacteria cells are prokaryotic because -
Answers
Answer:
D
Explanation:
Prokaryotic cells have no nucleus, eukaryotic cells do. A squirrel is eukaryotic, therefore it’s genetic material will be stored in the nucleus.
Cells from a squirrel are considered eukaryotic and bacteria cells are prokaryotic because squirrel cells are eukaryotic.
What are eukaryotic cells?Animal cells are eukaryotic cells which have each a membrane-sure nucleus and different membrane-sure organelles. These organelles perform particular capabilities which are wished for the everyday functioning of the cell. Plant and animal cells are comparable in that they're each eukaryotic and feature comparable sorts of organelles.
The nucleus is mainly crucial amongst eukaryotic organelles due to the fact it's miles the place of a cell's DNA so option d is correct.
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A researcher studies how nitrogen moves from the atmosphere into the different living organisms in an area. This is an example of:
a) community ecology
b) ecosystem ecology
c) global ecology
d) population ecology
Answers
Answer:
b
Explanation:
not sure how to explain.
Answer:
it is either eco or community ecology
Explanation:
What shape do the epithelial cells need to perform their functions.
A Round and unattached
B Spirals and long
C Spikey and long
D Long and thin
Answers
Answer:
d long and thin
Which correctly describes a difference between the male and female
reproductive systems?
O A. Males store gametes in the ovary.
B. Females produce fewer gametes.
C. Females produce gametes every day.
D. Males receive gametes from females.
Answers
Answer:
B . Females produce fewer gametes.
Explanation:
The option that correctly describes a difference between the male and female reproductive systems is B. Females produce fewer gametes.
What is a reproductive system?The reproductive system is a collection of organs and tissues that work together to produce, transport, and fertilize gametes (sperm in males and eggs in females) to facilitate reproduction. In males, the reproductive system includes the testes, epididymis, vas deferens, seminal vesicles, prostate gland, and urethra.
Sperm are produced in the testes, mature and are stored in the epididymis, and then transported through the vas deferens and mixed with seminal fluid produced by the seminal vesicles and prostate gland before being ejaculated through the urethra during sexual intercourse. In females, the reproductive system includes the ovaries, fallopian tubes, uterus, cervix, and vagina.
Eggs are produced in the ovaries and are transported through the fallopian tubes, where fertilization can occur. The fertilized egg then implants in the uterus, where it can develop into a fetus. Hormones, such as estrogen and testosterone, play important roles in regulating the reproductive system and maintaining sexual characteristics.
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Which marine mammals has external ears called otariidis and a long neck?
a. Sea Lion
c. manatee
b. Seal
d. sea otter
Help me ASAP .
Answers
Please Drag the correct moon phase name to its correct location
Answers
Answer:
The correct answer is -
1. First Quarter Moon, 2. Waxing Gibbous Moon, 3. Full Moon, 4. Waning Gibbous Moon, 5. Third Quarter Moon, 6. Waning Crescent.
Explanation:
The lunar cycle goes through eight different phases during the time period of 29.53 days while revolving around the earth. These phases move from new moon to full moon and then full moon to again new moon. The four major phases are New moon phase, the first quarter phase, the full moon, and the third or last quarter phase.
In this diagram, there are 1. First Quarter Moon, 2. Waxing Gibbous Moon, 3. Full Moon, 4. Waning Gibbous Moon, 5. Third Quarter Moon, 6. Waning Crescent. in order occurs.
What do the roots of a plant do? (Select all that apply.)
A. photosynthesis
B. absorb water and nutrients
C. food storage
D. anchor plants to the ground
(More than one answer)
Answers
B
C
D
Hope this helps
Which country is heavily dependent on tourism for its livelihood?
А.
United States
В.
China
C. Dubai
D.
Peru
E. Japan
Answers
Answer: В.
China
Explanation:
how many molecules are there in 4.00 moles of glucose n2o3
Answers
Answer:
2.41 × 10^24 molecules
Explanation:
To calculate the number of molecules of a substance (nA), we multiply the number of moles of such substance (n) by Avagadro's number or constant, which is 6.02 × 10^23.
That is; nA = n × 6.02 × 10^23.
In this question, 4 moles of glucose were given. The number of molecules in 4 moles of glucose is as follows:
nA = 4 × 6.02 × 10^23
nA = 24.08 × 10^23
nA = 2.41 × 10^24 molecules.
Which statement regarding the moon is true?
A. The maria are younger as evidenced by their high crater density.
B. The maria are older as evidenced by their low crater density.
C. Highlands are older as evidenced by their high crater density.
D. Highlands are younger as evidenced by their low crater density.
Answers
Answer:
The Highlands are older as evidenced by their crater density.
Explanation:
The true statement regarding the moon is true the Highlands are older as evidenced by their high crater density.
The moon is simply known as anatural satellite that revolves around a planet. It's rotation is about 27.3 daysThe statement above is true because in the moon, there is no erosion and as such the moon will still have high in crater density and therefore the older, the more it get.Conclusively we can therefore say that the true statement regarding the moon is true The Highlands are older as evidenced by their high crater density."
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Plants and insects store their sugar in the form of
Answers
Plants and insects store their sugar in form of starch.
Help me please omggggg help meee
Answers
Answer: straight line. Once it hits an object, then it bends.
Hope that helped!
Answer:
im pretty sure its a
Explanation:
When pure black hamsters were mated with pure white hamsters, all of the offspring were black. The trait for white coloration would best be described as???
PLZ HELP
I DONT HAVE A LOt OF TIME
Answers
Answer:
A. Recessive
Explanation:
have a good day!!
An organism that can make its own food and is composed of many cells that each contain a nucleus belongs to which kingdom?
1. Plantae
2. Animalia
3. Fungi
4. Bacteria
Answers
1.plantae
Explanation:
hope it helps
Plantae organism that can make its own food and is composed of many cells that each contain a nucleus belongs to which kingdom.
What is Plantae?Apart than some of the earliest cousins of algae, the class Plantae comprises multicellular creatures. They are eukaryotes, which means they have membrane-bound cellular organelles and a nucleus. Around the cell, there is a cellulose-containing cell wall.
Typically, a mature plant has a single, big central vacuole that is bound by a tonoplast (membrane). The reserve food for plants is starch and lipids (oil/fat).
All plants have cells, which contain plastids, double membrane-covered cell organelles. Photosynthetic pigments are present in several plastids (chlorophylls).
Therefore, Plantae organism that can make its own food and is composed of many cells that each contain a nucleus belongs to which kingdom.
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PLEASE HELP FAST PLEASE
Develop a nickname for another organelle and describe why you chose it.
Answers
Answer: . An organelle (think of it as a cell's internal organ) is a membrane bound structure found ... There are actually two different endoplasmic reticuli in a cell: the smooth ... which project into the extracellular space and act like a name tag for the cell.
Explanation:
Why does the control of blood sugar by insulin show negative feedback?
Select one:
The release of insulin causes sugar levels to increase even more.
Sugar lowers the levels of insulin back to the normal levels.
The release of insulin brings the sugar levels back to normal.
Insulin mixes with the sugar to prevent it from damaging the cells.
Answers
Answer:
The control of blood sugar (glucose) by insulin is a good example of a negative feedback mechanism. When blood sugar rises, receptors in the body sense a change. In turn, the control center (pancreas) secretes insulin into the blood effectively lowering blood sugar levels.
Explanation:
have an good day
What happens to a human egg that is NOT fertilized?
a.) It leaves the body.
b.) It returns to the ovary.
c.) It remains in the Fallopian tube.
d.) It implants in the uterus.
Answers
Answer:
It leaves the body . That what brings about monthly cycle in a female
Match the pathway of the carbon cycle
Answers
identify two earliest inhabitants of Kenya
Answers
Answer:
i hope it helps
mapriend
Which animal is strongest physically. (not compared to their size)
Answers
Answer:
A dung beetle is not only the world's strongest insect but also the strongest animal on the planet compared to body weight. They can pull 1,141 times their own body weight.
How does hypnotism work
Answers
Answer:
During hypnosis, the scientists found, a region of the brain called the dorsal anterior cingulate cortex became less active. Studies have found that that region helps people stay vigilant about their external environment. ... The activity in their dorsal anterior cingulate cortex may account for that behavior, too.
How did Siberian ancestors arrive in America?
Answers
Answer:
The prevailing theory proposes that people migrated from Eurasia across Beringia, a land bridge that connected Siberia to present-day Alaska during the Last Glacial Period, and then spread southward throughout the Americas over subsequent generations.
Explanation:
hope this helps
Answer:
Explanation:The Beringia land bridge, which had developed between northeastern Siberia and western Alaska due to the lowering of sea level during the Last Glacial Maximum, is generally recognized as the point at which Paleolithic hunter-gatherers reached North America from the North Asian Mammoth steppe.
The periodic shedding of the uterine lining usually takes place --
O after menopause
O during pregnancy
O if fertilization does not occur
O before puberty begins
Answers
Answer:
before puberty begins
Explanation:
because on your menstrual cycle the blood clots are actually pieces of uterus and that's actually your uterine shedding and it usually starts doing that even before your period begins so it definitely be before puberty begins hope I didn't make the answer to awkward but that's the truth LOL
The periodic shedding of the uterine lining usually takes place before puberty begins. The correct option is D.
Thus, An egg is released from the ovary into the fallopian tube during ovulation, which happens roughly halfway through a woman's menstrual cycle. The uterine lining that was developed to support a potential pregnancy is no longer required if fertilization of the egg by a sperm does not take place.
The uterine lining sheds as a result, causing menstruation, often known as the monthly menstrual cycle. In a typical 28-day menstrual cycle, this shedding typically takes place around 14 days following ovulation.
In females of reproductive age, menstruation is a normal process that lasts until menopause, at which point it ceases. Menstruation is a component of the menstrual cycle.
Thus, The periodic shedding of the uterine lining usually takes place before puberty begins. The correct option is D.
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The number of organisms that an ecosystem can support depends on