The scientists believe the continents formed Pangaea about 300 million years ago. The correct option is C.
What is Pangaea?According to National Geographic, the Pangaea theory proposed that the tectonic plates that make up the planet's external crust glided over the inner layers until they consolidated as a landmass encircled by a huge ocean called Panthalassa.
After a while, the Angaran continent near the North Pole began to move south and combined with the northern part of the expanding Euramerican continent, forming the Pangea supercontinent. This process was completed approximately 300 million years ago.
Alfred Wegener observed the same thing in 1912 and proposed that the continents were once scaled down into a single protocontinent known as Pangaea.
Thus, the correct option is C.
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True or False? By the way Estuaries are the spots where ocean and river meet (brackish water) Brainliest!!!
Estuaries have very deep waters.
Estuaries are called the “cradle of the ocean.”
Estuaries are stable environments in terms of tides, salinity and temperature.
Answer:
1. False
2. True
3. True
Explanation:
I'm pretty sure these are right, I hope this helps!
Answer All are true
Can someone please help me
Answer:
bruh your so pretty
i dont kno how 2 do that tho sry
Explanation:
As ecosystems move through the states of succession, the populations of organisms in them change. Which of the following describes the stage of succession likely to have the most species diversity?
Match each example of irony with the type of irony it represents.
1. The reader knows that the boy is about to break up with his girlfriend, but the girlfriend doesn't know.
Dramatic irony
2. Dave's blood pressure medicine game him a heart attack.
Situational irony
3. "Oh, great! I'm so glad it's raining, and I forgot my umbrella."
Verbal irony
ok so...
1. The reader knows that the boy is about to break up with his girlfriend, but the girlfriend doesn't know. That is dramatic irony
because Dramatic Irony appears when the readers know something the character does not know. For example, in scary stories, the reader often knows where the bad guy hides, but the character does not. As the character approaches the hiding spot, the readers may experience heightened suspense due to the dramatic irony.
2.Dave's blood pressure medicine game him a heart attack. That is
Situational irony.
Situational Irony happens when something happens that the reader does not expect to happen. For example, if someone robs a thief in a story, that portrays situational irony. Readers would not expect a thief who robs others to be the one who gets robbed.
3. "Oh, great! I'm so glad it's raining, and I forgot my umbrella." That is Verbal irony
Verbal Irony occurs when a character says one thing but means something else. This type of irony is also known as sarcasm. For example, a parent might reveal verbal irony, or sarcasm, by showing up at the door of an extremely messy room and commenting, "I've never seen your room this clean before! You are grounded." Clearly, the parent revealed sarcasm when commenting about the cleanliness of the room.
What would be the main problem with reproduction if meiosis did not take place to form sex cells?
A. The zygote would have two nuclei.
B. Fertilization would result in a zygote with half as many chromosomes as the parents.
C. Fertilization would result in a zygote with twice as many chromosomes as the parents.
D. The zygote would have no nucleus.
Answer: C. Fertilization would result in a zygote with twice as many chromosomes as the parents.
Explanation: Hope this helps
Answer:
The zygote would have two nuclie
Explanation:
What is NOT made during the Light Dependent Cycle?
Answer:
The light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis: the energy storage molecule ATP and the reduced electron carrier NADPH. In plants, the light reactions take place in the thylakoid membranes of organelles called chloroplasts.
Which of the following best describes the composition of a
nucleotide?
a
Ob
a five-carbon sugar attached to a phosphate group
and a nitrogenous base
a carbon atom joined to hydrogen and three
functional groups
a chain of carbon atoms with a carboxyl group
bonded to one end
a pair of six-carbon rings attached to each other
Ос
Od
Answer: a nitrogen-containing base, a phosphate, and a pentose sugar
Explanation:
A five-carbon sugar attached to a phosphate group and a nitrogenous base is the best description of the composition of a nucleotide molecule. Thus, the correct option is A.
What is a Nucleotide?Nucleotides are the organic molecules which consist of a nucleoside molecule and a phosphate moiety. Nucleotide molecules serve as monomeric units of the nucleic acid polymers such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are the essential biomolecules within all the life-forms which are found on the Earth.
A nucleotide molecule consists of a nitrogen-containing base such as adenine, guanine, thymine, or cytosine in DNA and adenine, guanine, uracil, or cytosine in case of RNA molecule, a phosphate group, and a pentose sugar such as deoxyribose in DNA and ribose in RNA.
Therefore, the correct option is A.
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A cell that has an uncontrolled cell growth and division is called
abnormal tissue growth.
and results in
Answer:
Should be cancer
Explanation:
Cancer is where there is an area on the body where an area of cell grows uncontrollably.
Mirgrating definition (in own words not from google)
In my own words... Migrating means like you're migrating another country. For example: Birds migrate another countries and the birds you never seen before. Some people migrating another countries and another.
I hope this one helps
why the eggs of silk moth are kept below 18 degree Celsius in winter?
Exposure to antigens in the body stimulates it to produce _________ .
Answer:
White blood cells
hjgigoh
Give at least 1 advantage of anaerobic respiration
Answer:
Anaerobic respiration is relatively rapid,and it does not require oxygen.
What are some questions that biologists might ask about the living things they
study?
Think about what the living things need and do. (5 points)
Answer:
They may ask how a single tiny cell becomes a tree or a dog, how the human mind works, or how the different forms of life in a forest interact. What makes up the biosphere?
Explanation:
In your own words explain how "Carrying Capacity" plays a vital role in today's world and our future as well.
Answer:
Carrying Capacity is very important for today as well as for the future.
Explanation:
Carrying Capacity refers to the maximum population of a particular organism that a specific environment can hold. In each and every environment, there are different population of organisms present due to the availability of resources such as food, water and space for living. If these resources are present in large amount then the population of organism will be higher but if these resources are limited, then the population will be lower. Carrying Capacity is also important for the future because with the passage of time, population of human increases which destroy the forests because human requires area for living. So for cutting of forests, the animals migrated to other areas and sometimes die due to no space available for them.
Scientists can produce many plants in the lab by cloning; culturing a few plant cells in a test tube of chemical medium. Few cells grow into a new plant. It is easy for scientists to produce many plants from just a few cells. Where would you add "cloning" to the Venn diagr
Answer:
in the epicenter
Explanation:
In a Venn Diagram that compares and contrasts the different characteristics or features of the produced plants, "cloning" would be in the epicenter. This is because through the process of "cloning" you are basically copying the core genetic makeup of the plant and creating a brand new plant that shares all of the exact same characteristics and features as the plant's whose genetic makeup was used as a baseline.
Answer:
B. Mitosis
Explanation:
Mitosis is when cells divide to form an identical copy of themselves.
When the Sun shines directly on an object, the color of the object determines how the
object heats up, because its color affects how light is-
O absorbed and reflected.
absorbed and refracted.
O refracted and transmitted.
O absorbed and transmitted.
What is the purpose of this process? Choose 1 answer: Choose 1 answer: (Choice A) A Producing ATP for the cell (Choice B) B To deliver proteins to other locations in the cell (Choice C) C To collect amino acids for protein synthesis. (Choice D) D To send messages to the nucleus
Answer:
A. Producing ATP for the cell.
Explanation:
ATP is produced by multiple cellular composition. ATP is synthesized from ADP and phosphate is formed by the process of cellular respiration. Mostly it is produced by enzymes present in the cell. These enzymes convert phosphate into ATP.
Volcanic eruptions can also cause tsunamis.
true or false
Answer:
true
Explanation:
Tsunamis is created by underwater shockwaves caused by large explosions, taking what we know about that Volcanoes do create shockwaves up to (Baxter 2000) and 13 km away, an most likely volcanoes 1 km from water.
Which statement is true about prokaryotic cells?
A) Prokaryotic cells don't have a cell membrane
B) Prokaryotic cells don't have DNA
C) Prokaryotic cells don't have a nucleus
D) Prokaryotic cells can't reproduce without a host
The statement is true about prokaryotic cells - C) Prokaryotic cells don't have a nucleus
Prokaryotic cellsCells come in various shapes and sizes. Based on the presence of a nucleus or membrane-bound organelles, cells are broadly classified as Prokaryotic cells or Eukaryotic cells.
Prokaryotic cells lack both, a well-defined nucleus and membrane-bound cell organelles. Examples of prokaryotes are blue-green algae, bacteria, and mycoplasma.
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How does the distance from the mainland affect the number of species?
Answer:
Area increases diversity because a larger plot is likely to have more habitats, hence niches, to support a greater variety of species. How does the distance from the mainland affect the number of species? The farther from the mainland you go, the less species richness.
Yo! Bakugo here! I need some help.
Why might soils rich in organic matter not be fertile?
a.Soil fertility comes from a balance of organic matter and other mineral nutrients.
b.Large amounts of organic material make soil retain too little water.
c.Soil fertility is a result of the inorganic minerals present.
d.Soils rich in organic material are always highly fertile.
Answer:
A. Soil fertility comes from a balance of organic matter and other mineral nutrients.
Explanation:
Self-explanatory lol :)
Answer:
A
Explanation:
A population of rabbits moves to a dry desert environment. How could natural selection be a main contributing factor to speciation in this rabbit population?
A) Most of the rabbits die due to dehydration.
B) Some rabbits reproduce at a different rate.
C) The rabbits are able to interbreed with other species of hare living in the desert.
D) Some of the rabbits are better adapted to the drier environment.
Answer:
D) Some of the rabbits are better adapted to the drier environment.
Explanation:
Natural selection is when the environment favours certain traits in organisms. Organisms that possess these traits are more likely to survive and pass on the traits to their offspring, leading to evolution.
Speciation is when populations become different enough (for example due to natural selection acting on variation in the population) that new species form.
If some rabbits posses traits that make them better adapted to the drier environment, then these rabbits are more likely to survive and pass on these traits to their babies. Eventually, this can cause speciation, as the rabbits that live in the desert are subject to different selective pressures (drier environment)
Which is erosion taking place on the river diagram: A or B? (idk which subject to pick :/)
Answer: I think A!
Explanation: Because of the waters force, it would be wearing down on A, because of the way this river is shaped :) please let me know if this helps! Have a great night and good luck!
Cells Test 2 2020 21 UPDATED / 2 of 25
Which of the following best explains what would happen to animal cells if plant cells did not
perform photosynthesis?
A Animal cells would not be able to process energy from sunlight
B. Animal cells would not have oxygen to produce glucose.
c. Animal cells would not have carbon dioxide to produce energy
D. Animal cells would not have glucose to produce energy
What discovery did Galileo make when observing Jupiter?
Answer:
the mons of jupiter
Explanation:
Which option illustrates where the youngest crust is formed?
Question 2 options:
A
B
C
None of them
The mid-oceanic ridges is a place located in the Atlantic ocean is know for the concept of seafloor spreading. New seafloor is being created on another side of the ridge.
The diagram or illustration represents the mid-Atlantic ridge which is the zone of upwelling of magma. As the magma upwells it gets deposited on both sides. According to paleomagnetism the magma on both left and right sides leads to the creation of plate tectonics. Hence more close they form the more recent or younger rocks/plates as compared to those formed farther away near the continental mass.Thus the correct option is A.
Learn more about the illustrates where the youngest crust is formed.
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Question 2 (3 points)
Since velocity describes both speed and direction, you can call it
a force arrow
a vector
a magnitude
the same as acceleration
Answer:
A vector, I guess
Explanation:
Well, a vector is a physical quantity that has both magnitude and direction. I hope this helps! :-)
Need some help
1. Special proteins called _________ are the biological catalyst that speed up the rate of chemical reactions in the biological processes.
Catalyst
Enzymes
Lipids
Carbohydrates
2. Small building blocks of Polymers are called _______
Dehydration synthesis
Hydrolysis
Monomers
Catalyst
Next six questions are fill in the blank
3. Polymers are formed by combining monomers through __________ reactions
4. Monomer are separated through ____________ reactions
5. Glucose is single sugar unit called __________
6. Lactose is two sugar unit called ___________
7. Long term energy storage and chemical messengers are functions of _______
8. There are two kinds of fatty acids called _________ and ________
9. Names six functions of proteins
10. Compare and contrast DNA to RNA
11. Compare and contrast saturated fats and unsaturated fats in terms of their
structures.
Answer:
Sorry for your loss
Explanation:
Which of the following statements are true?
Carrying capacity is what ultimately determines the size of a population.
Disease can spread through populations with a low density better than ones with a high density.
When predators in the area increase in population so does the number of prey.
The size of a population will continue to grow exponentially if there are no limiting factors impacting its
growth.
1 pts
Answer:
Density-independent Regulation and Interaction with Density-dependent Factors. Many factors that are typically physical in nature cause mortality of a population regardless of its density. These factors include weather, natural disasters, and pollution. {so true}
Explanation:
Which sequence is complementary to the DNA sequence of CGTAGACAT?
Answer:
CGTAGACAT?
GCATCTGTA
Explanation:
a helpful mnemonic for pairing DNA with their corresponding sequence is Apple in Tree, Car in Garage