Answer:
Its cells have thick, hard walls.
Explanation:
Answer:
-xylem cells are long tracheary elements that transport water.
-dead cells are similar like pipes, hollow and rigid.
Question 7 If two molecules of DNA formed during replication are different, what has happened?
1. perfect replication
2. transcription
3. translation
4. mutation
With explanation pls
Pls right answer NO GUESSING
Answer:
2 transcription
Explanation:
i learn this last unit test
ps. go to you tube and like for goldendeathrider
Some processes that shape Earth are shown below.
Answer:
3: Glacial Movement
Explanation:
A. What are the names of the vessels labeled A and B in the
diagram?
Answer:
A - Lacteal
B - Capillaries
Explanation:
I learned this not too long ago :)
Coral reefs are home to a quarter of all marine species on Earth. What is one
consequence of decreased biodiversity in coral reefs?
A. More niche opportunities for land species
B. Increased number of predatory species
C. Increased stability of all other biomes
D. Less seafood in the human food supply
Answer:
D
Explanation:
A is wrong, it's talking about land. B is an increase in biodiversity. C is wrong because other biomes depend on reefs
The one consequence of decreased biodiversity in coral reefs can be increased number of predatory species. The correct option is B.
What are predatory species?Predatory animals are those that kill and then eat other animals, or "prey on" them. Predatory animals include hawks, lions, alligators, and humans. When one party victimizes another for personal gain, the term predator is also used.
Predation is a natural feeding behavior of animals, plants, and microorganisms in which one species feeds on another for survival. Predation is the process by which one animal kills another and consumes it as food.
Increased predatory species may be one of the consequences of decreased biodiversity in coral reefs.
Fish, marine worms, barnacles, crabs, snails, and sea stars are all predators of coral polyps' soft inner tissues. In extreme cases, large predator populations can devastate entire reefs.
Thus, the correct option is B.
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What is an adaptation?
O A. A way for an ecosystem to recover after a disturbance
B. A genetic mutation that harms an organism
C. A trait that makes an organism more likely to reproduce
D. Something that an organism learns during its life
Adaptation may be defined as a trait that makes an organism more likely to reproduce. Thus, the correct option is C.
What is Adaptation?Adaptation may be defined as those inheritable characteristics that enhance an organism's capability to survive and reproduce in an environment.
Adaptation may also be categorized under learned behavior that an organism develops during its life to take food, protection, survival, and reproduction under unfavorable or extreme harsh conditions.
Therefore, the correct option is C.
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Most early successional species are
considered -selected species
A. K
B. s
C.J
D.r
HELP ASAP PLZ
Answer:
the answer is b
Explanation:
PLEASE ANSWER ASAP!
Considering the theory of continental drift, is it possible that the continents of the earth could once again become one? Explain your answer.
Answer: The Earth's continents are in constant motion. On at least three occasions, they have all collided to form one giant continent. If history is a guide, the current continents will coalesce once again to form another supercontinent. And a study in Nature now shows how that could come about.
You can think of continents as giant puzzle pieces shuffling around the Earth. When they drift apart, mighty oceans form. When they come together, oceans disappear. And it's all because continents sit on moving plates of the Earth's crust.
Then, Now And Future
A new model of continental drift predicts that the next supercontinent could form near the North Pole — in another 100 million years or so.
Two of the previous supercontinents, which formed 200 million years ago (Pangaea) and 800 million years ago (Rodinia).
Mitchell, et. al./Nature
The Americas and Asia may fuse together to form a new supercontinent, "Amasia."
Mitchell, et. al./Nature
"Continents on these plates typically move, I would say, at the rate your fingernails grow," says Ross Mitchell, a graduate student at Yale University. That may seem slow, but it adds up over hundreds of millions of years.
Look at an atlas and you can imagine how Africa and South America, for example, once nestled together.
"Rewind the tape and bring all the continents back into their jigsaw arrangement, you have this vast landmass of all the Earth's continental blocks together," Mitchell says.
Last time all the landmass clumped up, it formed a supercontinent called Pangaea. The dinosaurs walked there. But Pangaea wasn't the first.
"There had been three, possibly a debated fourth supercontinent through the billions of years," Mitchell says.
He has been studying that deep history by looking at tiny magnets buried in rock around the world. Those magnets pointed north when they were locked into the rock. Sample those magnets in layers of rock laid down over millions of years, and you can tell the story of how those continents have moved.
And naturally, that led Mitchell to wonder what the next supercontinent will look like.
There have been two leading ideas. One is that the continents will collapse together again at the site of the last supercontinent, centered on Africa. That would squeeze the Atlantic Ocean shut. The other idea is that the Atlantic would keep growing and growing.
Considering the theory of continental drift, is it possible that the continents of the earth could once again become one.
The Earth's continents are constant motion, they will collide to form a giant continent and the current continents will coalesce once again to form another supercontinent.
What Is Continental Drift Theory?Continental drift theory was the revolutionary theory developed by Alfred Wegener (1880-1930), a German meteorologist, climatologist, and geophysicist.
He put forwarded his hypothesis that the continents included in a large enormous landmass or supercontinent about 240 million years ago before breaking and drifting.
This supercontinent was named as Pangaea.
Some major drawbacks of this theory are he did not explain why the drift happened during Mesozoic era, but not in earlier era.
He did not take oceans into account for his hypothesis, proofs are based on generalized assumption, so it is not significant.
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In an oil spill, why does the oil not mix with the sea water
In a population of wolves, the birth rate is 4, the death rate is 3, immigration is 2, and emigration is 3. Calculate the population growth by filling in the formula below. ( + ) – ( + ) = Since the population growth is , the population is
Population growth is defined as an increase in the number of individuals in a population. Thus, the population growth in the above example is zero.
What is Population growth?Population growth is defined as an increase in the number of people in a population or a dispersed group. Population growth is explained as an increase in the number of individuals in a population.
Population growth is defined as an increase in the number of individuals in a population where most communities with high population growth experience limited resources, for example food, while communities with low rates of population growth do not.
This formula is used to find out the population growth of a population; (Birth rate + emigration) – (death rate + emigration).
Given,
Birth rate = 4, the death rate = 3, immigration = 2, and emigration = 3.
Population growth = Birth rate + immigration - death rate -emigration
= 4 + 2 - 3 - 3
= 6 - 6
= 0.
Thus, the population growth in the above example is zero.
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Since the 1970’s, the Earth has been warming. Can this be due to natural, increased solar output? Why or why not?
One dog pulls on a chew toy to the right with 10 N of force while another dog pulls to the
left with 7 N of force on the same chew toy. What will be the result?
A.the dogs will go left
B.the dogs will go right
C.the dogs will remain in the D.same spot
Answer:
B:The dogs will go right
Someone please help
Answer:
HH
Explanation:
!Plz help! !I keep getting different answers! Cellular respiration refers to:
a. breathing.
b.the diffusion of oxygen into the cells.
c. the transfer of O2 and CO2 across a cell membrane
d. the production of ATP from energy rich compounds
Answer:
A.breathing
Explanation:
I'm sorry if this is wrong but I'm 99% sure this is right!
Hopefully this helped! :)
How can DNA become damaged? Explain your answer
Answer:
DNA can be damaged via environmental factors as well. Environmental agents such as UV light, ionizing radiation, and genotoxic chemicals. Replication forks can be stalled due to damaged DNA and double strand breaks are also a form of DNA damage.
Answer:
DNA can be damaged via environmental factors as well. Environmental agents such as UV light, ionizing radiation, and genotoxic chemicals. Replication forks can be stalled due to damaged DNA and double strand breaks are also a form of DNA damage.
Explanation:
What are the roots of x in -10x2 + 12x − 9 = 0?
A.
B.
C.
D.
E.
Use the quadratic formula
Answer is B.
Answer:
the anwer is B. Make sure for plato answers align so you can get it coorect. Good luck.
Explanation:
Plato
Use the drop-down menus to indicate where each endocrine system structure is located.
The thyroid, parathyroid, and thymus are located in the A.brain B.throat C.abdomen.
The adrenals, pancreas, testes, and ovaries are located in the A.brain B.throat C.abdomen.
The pineal, hypothalamus, and pituitary are located in the A.brain B.throat C.abdomen.
What percent will be black?
50 %
100 %
25 %
Answer: 50 % will be black.
Explanation:
The answer is 50% because there are 4 boxes and two of them have the dominant trait of being black and the other 50% will be spotted/
Which statement best describes a link between the nervous and excretory
systems?
O A. The kidneys produce hormones that travel to the brain through the
nerves.
B. The excretory system removes wastes from nerve cells.
O C. Sensory neurons detect problems in blood that are corrected by
the kidneys.
O D. Nerves are the connective tissue in the kidneys.
Answer:
C
Explanation:
The correct answer is C. When sensory neurons detect a problem in the blood, a signal is sent through afferent neurons to the brain. The brain releases a stimulus, likely a hormone through the pituitary, in order to get the kidneys to correct the problem.
A food web diagram is provided. Based on the diagram, which three consumers all get their energy directly from the same producer?
A. A Squirrel, robin, and field mouse
B. B Squirrel, deer, and mountain lion
C. C Prairie grass, deer, and mountain lion
D. D Plant seeds, field mouse, and snake
Which moon phases are present in this model?
a. New Moon and Full Moon
b. 1st Quarter and 3rd Quarter
c. Waning Cresent and Waxing Cresent
d. Waning Gibbous and Waxing Gibbous
2 Points
Which kind of graph line shows logistic growth?
O A. A life span curve
O B. An S-curve
O C. A survivorship curve
O D. A J-curve
Answer:
it is b an s-curve i hope it is right for yall
Answer:
B - an S-curve
Explanation:
What kind of an animal is a zebra
Answer:
Explanation:
im pretty sure it is a Equine family from a mamel i hope thats the answer!
Hope it helps
- Delilah
2. Which structure allows lymph from the lower right limb to enter the
bloodstream?
a. Thoracic duct
b. Right lymphatic duct
c. Right lymphatic trunk
d. Left lymphatic trunk
Which of the following tools can be used to see (and count) an organism's chromosomes?
Karyotype
DNA fingerprint gel
polymerase chain reaction (PCR)
pedigree
Answer:
a karyotype
Explanation:
A karyotype allows you to see and count a organism's chromosomes to make sure there are no abnormalities.
*
Which of these are mammals? (3)
Dog
Clownfish
Snake
Frog
Human
Dolphin
Answer:
Dog, Human, Dolphin
Explanation:
All of these animals produce milk, live birth, and have hair. These qualities make them mammals
Elizabeth is digging a hole and discovers a trilobite. She continues digging deeper and finds another trilobite.
Which of the following is an accurate conclusion?
The second trilobite is older than the first trilobite.
The first trilobite is older than the second trilobite.
The first trilobite is smaller than the second trilobite.
The second trilobite is smaller than the second trilobite.
Cosmologists are scientists who study stars, galaxies, black holes, and other objects in the universe. In order to study the billions and billions of stars, cosmologists use highly advanced telescopes and create computer models to trace the stars’ motion.
What is one type of limitation that requires cosmologists to use these telescopes?
money
time
the size of the system
ethical concerns
Answer:
ethical concerns
Explanation:
Which outcome would you expect when water is removed from an aquifer faster than it is replaced on a regular basis?
O A. increasing occurrences of drought
OB. reduced fish populations within the aquifer
OC. pollution of water within the aquifer
D. increased reliable surface runoff
E. subsidence of land above the aquifer
Answer:
E
Explanation:
subsidence of land above the aquifer
Give an example of reciprocal behavior from everyday life?
what is the recorded density of japanese knotweed in florida