Answer:
Because the land surface was then largely covered in ice, continental weathering effectively ceased. This locked the planet into a 'Snowball Earth' state until carbon dioxide released from ongoing volcanic activity warmed the atmosphere sufficiently to rapidly melt the ice cover. This model does not, however, explain one of the most puzzling features of this rapid deglaciation; namely the global formation of hundreds of metres thick deposits known as 'cap carbonates', in warm waters after Snowball Earth events.
The Southampton-led research, published in Nature Geoscience, now offers an explanation for these major changes in ocean chemistry.
Lead author of the study Dr Tom Gernon, Lecturer in Earth Science at the University of Southampton, said: "When volcanic material is deposited in the oceans it undergoes very rapid and profound chemical alteration that impacts the biogeochemistry of the oceans. We find that many geological and geochemical phenomena associated with Snowball Earth are consistent with extensive submarine volcanism along shallo
Explanation:
What macromolecule makes up a inner region of the cell membrane?
Answer:
Phospholipids
Explanation:
3. Forces of evolution include
a. DNA mutations
b. lack of migration
c. random mating
d. a large population size
Answer:
A. DNA Mutations
Explanation:
it evolves them in ways that even random mating cannot control
Answer:
A large population size:: summary population size is the number of individuals in a population. population density is the average number of individuals per unit of area or volume. the pattern of spacing of individuals in a population may be affected by the characteristics of a species or its environment.
before a cell can divide it must copy one dna_____at a time in a process called DNA replication.
Answer:
Before a cell can divide it must copy its DNA one
DNA replication is the process by which a molecule of DNA is duplicated. When a cell divides, it must first duplicate its genome so that each daughter cell winds up with a complete set of chromosomes.
Explanation:
Brainliest please?
I need help , thank youu
Answer:
the structural layers of earth are - the crust, the mantle, the outer core, and the inner core.
Daphnia (water fleas) are small organisms which feed on algae, algae
are organisms which produce their own food through photosynthesis. The
graph shows the relative numbers of algae and Daphnia in a pond. a) In
which month are the numbers of algae at a maximum?
Answer:
The numbers of algae are at a maximum in May
Explanation:
The Y axis shows how high the population is, so the taller the point, the high the population.
Scientists theorize that oil and natural gas formed from the remains of microscopic manne organisms called
A) mussels
B) seashells
C) plankton
D) fossil fuels
Answer: It's C
Explanation: Plankton have been in the sea for along time, and oil takea millions of years to recover. So when a dead plankton dies and drops to the ocean floor, the energy in the oil basically comes from sunlight that the plankton trapps with a chemical inside of it which produces oil.
What fusion process is occurring in the star Procyon B?
Answer:
Procyon B's progenitor star most likely had around 2.59 solar masses. Estimates suggest that the star spent about 680 million years on the main-sequence, fusing hydrogen in its core. It evolved into a giant and lost much of its mass due to stellar winds
Explanation:
A 68-year-old woman who presents after a fall reports progressive difficulty climbing stairs for the past 3 months. She also feels a loss balance when rising from a chair. She has a 5-year history of diabetes mellitus for which she takes metformin. Examination demonstrates intact cranial nerve function; normal sensory examination except for mildly decreased touch and vibration in her toes, normal motor function except for 4+/5 deltoid power and 4+/5 hip power bilaterally, and an inability to stand on her toes. Deep tendon reflexes are 2+ but 1+ at the ankles; plantar responses are flexor; cerebellar function is normal except for mild difficulty with heel-knee-shin testing. She has difficulty rising from a chair without pushing up with her hands. These clinical findings are best explained by dysfunction in which of the following regions of the nervous system?A. anterior horn cellB. muscleC. nerve plexusD. peripheral nerveE. spinal cord
Answer:
spinal cord and nerve plexus
Explanation:
Faced with this clinical picture, we would be talking about the affection of the spinal cord and the peripheral nerves that sensually perceive the areas of the epithelium, that is, they give the sense of touch, since the patient is diabetic, it could be deduced that the microangiopathies that this generates Chronic disease over time, can affect the irrigation of certain areas and therefore their inventions, due to lack of supply of oxygen and nutrients.
Diabetics are at risk of affecting both upper and lower limbs, because over time they lose the vascularization and winterization of these areas, thus generating infections or pain imperceptible by the patient.
On the other hand then, it would be ideal to say that the spinal cord with the peripheral nerves that innervate the affected areas, and the cerebellum are affected by the lack of balance or spatial disposition of the patient in relation to their body size.
A solution with a pH of 2 can be increased to a pH above 7 by adding
Answer:
an acid
Explanation:
A solution with a pH of 2 can be increased to a pH above 7 by adding base (e.g. sodium hydroxide, potassium hydroxide).
What is a base?Bases are chemical substances that have a pH higher than 7 and that can neutralize acids. They have properties such as a bitter taste, slippery feel, and the ability to turn red litmus paper blue. Bases are classified as either strong or weak, depending on their ionization in solution. Strong bases have a high degree of ionization and can rapidly neutralize acids, while weak bases ionize to a lesser extent and have a slower effect on the pH of a solution.
Bases are important in many industrial and biological processes, and are used in cleaning agents, fertilizers, and medicines. The most well-known base is probably sodium hydroxide, commonly known as lye, which is used in the manufacture of soaps, detergents, and other products. Understanding the properties and behavior of bases is important in many fields, including chemistry, medicine, and environmental science.
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helppppp
A scientist is designing an investigation to study the impact of UV radiation present in high-altitude habitats on the population of mountain yellow-legged frog. What type population is most likely to be a control group for the study? (4 points)
a
Mountain frogs in low-altitude habitats only
b
Mountain frogs in their natural high-altitude habitat
c
Mountain frogs in a lab setting exposed to UV rays from a sun lamp
d
Mountain frogs in a lab setting with no UV ray exposure
Answer:
c
Explanation:
if the scientist was to look close there skin would be tightened up on the frog it is hard to see but if you look close you could see it
Answer:
C or D I think
Explanation:
D, you could compare frogs with no UV ray exposure to the ones with UV ray exposure
C, you can do the same but reverse
Edit: Meaning of control group is "A control group in a scientific experiment is a group separated from the rest of the experiment, where the independent variable being tested cannot influence the results. This isolates the independent variable's effects on the experiment and can help rule out alternative explanations of the experimental results."
So its more likely to be D
If one population is nearly decimated, it has no affect another population if the second
population depends on the first as a food source.
true
false
Identify the results of a substance losing energy. Select all that apply.
A. The temperature of the substance will increase.
B. The substance will change from the gaseous state to the liquid state.
C. The temperature of the substance will decrease.
D. The substance will change from the solid state to the liquid state.
Anybody know the correct choice for this? Is the answer correct I will mark you as the!!!!!
Answer: D CAGUAUUGGCAA - 3'
Explanation:
new cells form in the ____ as a plant grows
Answer:
Like other multicellular organisms, plants grow through a combination of cell growth and cell division. Cell growth increases cell size, while cell division (mitosis) increases the number of cells. As plant cells grow, they also become specialized into different cell types through cellular differentiation.
Explanation:
21. What is true about photosynthesis?
a. It produces water
b. It takes place in plants and animals
c. It produces carbon dioxide
d. It provides vital organic compounds
e. It requires sunlight energy
Answer:
a and e
Explanation:
which structure performs photosynthesis in plant cells but is not present in animal cells?
How is the human life cycle related to the cell cycle of the cells that make up our bodies?
The cell cycle has a direct relationship with the human life cycle.
Impact of cell on human life cycleHuman life cycle is directly related to the cell cycle of the cells that make up our bodies because our whole body is made up of trillions of cells. Cell is the structural and functional unit of an organism. Cells combine together make tissues.
Tissues join together making organ. Different organs combine together forming organ system and different organ system combine together forming human body so we can conclude that cell cycle has a direct relationship with the human life cycle.
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Which describes electrons?
A.) Electrons move at very fast speeds inside the nucleus of an atom.
B.) Electrons are stationary outside of the nucleus of an atom.
C.) Electrons are stationary inside the nucleus of an atom.
D.) Electrons move at very fast speeds around the nucleus of an atom.
The answer is D.) Electrons move at very fast speeds around the nucleus of an atom.
The option that best describes electrons is as follows:
Electrons move at very fast speeds around the nucleus of an atom.Thus, the correct option is D.
What is Electron?An Electron may be defined as a negatively charged subatomic particle that is significantly found in all atoms and functions as a primary carrier of electricity mostly in solids.
The electrons are always revolving around the nucleus of an atom, while protons and neutrons are localized in the center of an atom known as the nucleus.
Electrons are negatively charged subatomic particles and due to this, they generate an electric field that exerts an attractive force on a particle with a net positive charge and induces a repulsion force on a particle with the same negative charge.
Therefore, the option that describes the electrons is that they move at very fast speeds around the nucleus of an atom. Thus, the correct option for this question is D.
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the table show five of the most common chromosomal abnormalities that occur during reproduction. each abnormality cause significant alteration to the genome of the individual in which they occur. analyze the information in the table and determine the genotype of the abnormality that will result in a male having some female characteristics
a) down syndrome;xy
b)edwards syndrome;xx
c) turner syndrome;xyy
d)kilinefelter syndrome;xxy
Answer:
d)
Explanation:
The abnormality that will result in a male having some female characteristics is Klinefelter syndrome that is Option D is the correct answer. The Klinefelter syndrome, which has XXY genotype. This disease affects only the male
What are the different types of chromosomal abnormalities?Chromosomal abnormalities are of different types; some are related to autosomes, and some are related to X and Y chromosomes. The down syndrome happens due to the trisomy in the 21st chromosome, which means instead of two chromosomes, there are three chromosomes.
In Patau syndrome, the trisomy is seen in the 13th pair of homologous chromosomes, and as a result, instead of two chromosomes, three are present. Klinefelter syndrome is associated with males who have an extra X chromosome. Infertility is observed as a result of this male display of female characteristics, such as behavioral changes. Turner syndrome is associated with females who have lost one X chromosome.
As a result, the correct answer is option D, which is Klinefelter syndrome, which is XXY.
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Which equation best represents conservation of matter?
A 6H2O + 6CO2 → C6H12O6 + 6O2
B 6H2O + 6CO2 → C3H6O3 + 3O2
C 3H2O + 3CO2 → C6H12O6 + 6O2
D 6H2O + 10CO2 → C6H12O6 + 4O2
Answer:
A 6H2O + 6CO2 → C6H12O6 + 6O2
Explanation:
The law of conservation of matter states that matter can neither be created nor destroyed in a system. In other words, when elemental matter undergoes a reaction, the amount of elements used must be equal the amount produced.
The equations in this question depicts the overall photosynthetic process where CO2 combines with H2O to produce C6H12O6 and O2. In order for this equation to obey the "conservation of matter", each individual element must be equal on both the reactant and the product side i.e. the equation must be balanced.
The equation that fulfills this is:
6H2O + 6CO2 → C6H12O6 + 6O2
Hence, it correctly describes the conservation of matter.
Answer:
A 6H2O + 6CO2 → C6H12O6 + 6O2
Explanation:
The law of conservation of matter states that matter can neither be created nor destroyed in a system. In other words, when elemental matter undergoes a reaction, the amount of elements used must be equal the amount produced.
The equations in this question depicts the overall photosynthetic process where CO2 combines with H2O to produce C6H12O6 and O2. In order for this equation to obey the "conservation of matter", each individual element must be equal on both the reactant and the product side i.e. the equation must be balanced.
The equation that fulfills this is:
6H2O + 6CO2 → C6H12O6 + 6O2
Hence, it correctly describes the conservation of matter.
Explanation:
can somebody help me make a claim , evidence and reasoning on “Do you think school days should be made longer?
i need it now please help me
Answer:
i don't think so school days must be shorter and practical session must be longer theory is boring
Answer:
I think school days should not be made longer as this would impact the students mental health. Students attend school for approximately 7 hours a day in which they learn new content, this time being increased would cause stress and burden on students as classes would be longer and time spent at home would be less. Students need enough time to rest and relax their minds, as well as, spend time with their families. If extending school hours, students will have less time for self-care and family time which can lead to depression and loneliness. However, there are benefits of extending school hours such as more time to finish homework. But, a student's health must come first. In conclusions, school days should not be made longer.
Which of the following is found ONLY in plant cells?
O Cytoplasm
O Endoplasmic Reticulum
O Nucleus
O Chloroplast
Summarize how soil is important to life
50 pts
5.
____ is the day to day, hour to hour condition of our atmosphere.
Answer:
Weather
Explanation:
Weather is the day to day, hour to hour condition of our atmosphere.
cause weather is the condition of a short period of time.
and i could use a brainlest u know
Answer:
weather is the day to day, hour to hour condition of our atmosphere.
DONT SKIP PLS!!
Select all the correct answers.
Which geographic features are associated with a divergent boundary?
A:hydrothermal vents
B:continental mountains
C:ridges
D:subduction trench
E:rift
Answer:
I think the answer is Ridges and Rift
Answer: The correct answers are A. C. and E.
Which geographic features are associated with a divergent boundary?
hydrothermal vents
ridges
and rifts
Explanation: I just took the test on Plato and this is correct
Please Help!
ESSAY: How does a seismograph work?
(The essay needs to be 5 sentences)
Answer:
Seismographs record seismic waves. They contain a weight and a pen attached to a spring. The seismograph is bolted to the ground so during an earthquake it moves with the ground, whilst the weight and pen remain still. The pen moves across a rotating paper roll recording the seismic waves.
Hope this helped, have a good day
is amazon brazilian rainforest (yes or no)
Please answer if you know????
Which ponds will have a higher average oxygen concentration, ponds cooler than 20 °C or ponds hotter than 20 °C?
Answer:
20c is ponds cooler that 20 c hotter so its has more oxygen
Explanation:
Which statement accurately describes the energy needs for photosynthesis and cellular respiration?
A Solar energy is needed for cellular respiration but not for photosynthesis.
B. Chemical energy in the form of glucose is needed for both cellular respiration and photosynthesis.
C. Chemical energy in the form of glucose is needed for photosynthesis, and solar energy is needed for cellular respiration
D. Solar energy is needed for photosynthesis, and chemical energy in the form of glucose is needed for cellular respiration.
d
Answer:
D.
Explanation:
Solar energy is needed for photosynthesis, and chemical energy in the form of glucose is needed for cellular respiration.