Answer:
The iron ore deposits began forming when the first organisms capable of photosynthesis began releasing oxygen into the waters. This oxygen immediately combined with the abundant dissolved iron to produce hematite or magnetite. ... Steel Mill: Most iron ore is used to make steel.
The metal is obtained by reducing the oxide with sodium, magnesium or aluminium, or by the electrolysis of manganese sulfate. Manganese nodules have been found on the floor of the oceans. These nodules contain about 24% manganese, along with smaller amounts of many other elements.
Give an
example of a bioindicator, and explain why they are important.
One example of a bioindicator is lichens. These plants, which live on surfaces such as trees or rocks or soil, are very sensitive to toxins in the air. This is because they obtain their nutrients mostly from the air.
Which of Newton's laws is being described? The greater the mass the more inertia it has. F=ma A. Law of inertia / Newton's 1st law B. Law of acceleration /Newton's 2nd law C. Action • reaction/ Newton's 3rd law D. None of the above
Answer:
The Law of Motion
Which of the following does smooth muscle fall under?
voluntary or
involuntary
Answer:
Both cardiac and smooth muscle are involuntary while skeletal muscle is voluntary.
Explanation:
How does the number of genes in human cells compare with the numbers in other species?
Answer:
While the number of genes in an organism's DNA (red bars) varies from species to species (numbers at right), it is not always proportional to genome size (blue bars, in millions of base pairs). Note how many genes a fruit fly can squeeze out of its relatively small genome.
What is a gene?
A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins.
In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases.Comparative genomics also provides a powerful tool for studying evolutionary changes among organisms, helping to identify genes that are conserved or common among species, as well as genes that give each organism its unique characteristics.While the number of genes in an organism's DNA varies from species to species, it is not always proportional to genome size.Learn more:
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How are increased CO2 levels and increased temperatures affecting plant growth in the two experiments shown?
High CO2 levels cause plants to thicken their leave ,which could worsen climate change effect researchers says.
plant scientists observed that when CO2 levels increase in the atmosphere most plants do unusual , they thicker their leave
germination increase in high temperature up to the point
Increased CO2 levels and temperatures affect plant growth by bringing about a corresponding increase.
What is Photosynthesis?
This the process in which plants manufacture their food through the presence of sunlight.
other compounds such as CO2 and water are used which is why increase in the CO2 levels and temperatures will increase the growth of plants.
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Complete the table to describe the processes and outcomes of the different types of gene (point) mutations.
Substitution Insertion:
Deletion:
Answer:
Insertions are mutations in which extra base pairs are inserted into a new place in the DNA. Deletions are mutations in which a section of DNA is lost, or deleted.
Explanation:
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Sar and Dagon are the same distance from the equator, and they are
both near the ocean. Using the information in the map, how does the air
temperature of Sar compare to the air temperature of Dagon? Why The
air at Sar is?
Answer:colder
Explanation:colder than Dagon. The winds push ocean water that turns and follows the coasts. Energy is transferred from the air to the ocean at Sar and energy is transferred from the ocean to the air at Dagon.
¿Los huesos podrían estar hechos de otro material?
(Por favor una respuesta bien explicada)
Answer:
me imagino que no porque nuestos guesos son duros si tomamo calcio o cosas sanas. por ejemplo si nuestros guesos fueran de hierro y les pondriamo calcio o medicinas sanas, no pasaria nada
Answer:
por ejemplo si nuestros guesos fueran de hierro y les pondriamo calcio o medicinas sanas, no pasaria nada
Define these types of relationships (symbiosis).
a. mutualism -
b. commensalism-
c. parasitism -
d. predator/prey -
e. competition -
Answer:
mutualism -Both species benefit
commensalism- One species lives with, on, or in another species (the host). The host species neither benefits nor is harmed from the relationship. The species that lives on the host is benefited.
parasitism - One species (the parasite) lives with, on, or in a host species, at the expense of the host species. Unlike in predation, the host is not immediately killed by the parasite, though it may sicken and die over time.
predator/prey -One species (the predator) hunts and kills another species (the prey)
competition -The struggle among organisms for the same limited resources in an ecosystem
Explanation:
You are looking under a microscope at a dividing cell. You notice
the chromatin has just condensed into chromosomes, the nuclear
membrane has started to break down and the spindle has started
forming. What phase is the cell in?
Answer:
Prophase.
Explanation:
Prophase is the phase of mitosis in which chromatin condenses into chromosomes, the nuclear membrane is started to break down and the forming of spindle has started . Prophase is the first stage of mitosis which occurs after G2 portion of interphase. After prophase, metaphase, anaphase, and telophase occurs that completes the cell division process and the one parent cell divides into two daughter cells.
In a cross between individuals that are Aa x Aa, how many boxes of the Punnett square will show an offspring that is AA?
Answer:
1 box
Explanation:
25% AA
50% Aa
25% aa
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the answer is...........
Explanation:
............the concentration of transcription factors
The SWAG scientist wrote this description (in the picture below) of a cell after looking at it under the microscope. Which type of cell was the student most likely describing?
answers:
Animal cell
Bacterial cell
Plant cell
Prokaryotic cell
Answer:
I think bacterial cell becausea microscope look into small organisms that we can't see with a naked eye
Is this correct???!!!
Answer:
Yea
Explanation:
In a dihybrid cross, one of the parent's genotypes is PPYy. Which of the following would NOT be an expected gamete? (Hint: Use FOIL)
PY
Py
pY
Answer:
PY
Explanation:
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How do enzymes speed up reactions?
A. by lowering the activation energy
B. by breaking down other enzymes
C. by raising the temperature
Answer:
A. by lowering the activation energy.
Explanation:
Biological catalyst is known as enzymes. If the activation energy for a reaction is low then the rate would be faster.
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An animal that is endothermic and homoeothermic A. uses metabolic energy to regulate its body temperature and maintains a relatively constant body temperature B. has its body temperature determined primarily by the environment, but maintains a relatively constant body temperature C. has its body temperature determined primarily by the environment and has a broad range of body temperature variation D. behaviorally regulates its body temperature and has a broad range of body temperature variation E. uses metabolic energy to regulate its body temperature but has a broad range of body temperature variation
Answer: The correct option is A (uses metabolic energy to regulate its body temperature and maintains a relatively constant body temperature).
Explanation:
HOMOEOTHERMIC animals are also called endothermic animals. They are the warm blooded animals which uses heat energy generated metabolically to regulate and maintain a relatively constant body temperature. Examples of animals that are endothermic include the birds and mammals.
The temperature which they maintain is deep inside the body and not the skin temperature.
Also the temperature of a body is affected by the heat it gains and losses. The body gains heat mainly:
--> by absorbing it from its surroundings
--> from the heat released during the catabolic reaction that occur all the time in the body cells.
--> by conduction, convection and radiation from the surface of the body
--> through evaporation, especially of sweat and
--> in the air that is exhaled and urine that leaves the body.
Under normal circumstances, the heat the body gains is balanced by the heat it loses. A RISE in body temperature stimulates the following processes to get rid of excess body heat:
--> A decrease in metabolic rate: the body slows down its activities to decrease the metabolic rate. This reduces the heat released by metabolic reactions, hence minimizing heat production within the body.
A FALL in body temperature stimulates the following processes to produce and conserve heat:
--> increasing metabolic rate: The body increases its metabolic rate, especially that of the liver, to produce more heat
True or False: As the environment becomes less polluted, the number of light colored moths is able to decrease.
Cellular Respiration releases energy by breaking down:
A. Water
B. Food molecules
C. Carbon Dioxide
D. ATP
Answer:
The answer to this question is B.
Explanation:
Summary. Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
2. Is food a limiting factor for plants? Why or Why not?
Answer:
hope it helps!!
...............
What does the pH tells us about water?
a. Particles
b. Oxygen
c. Acidic or basic
d. Level of chlorine
Answer:
it's so obvious...
C. ... the pH tell us whether the water, a substance is acidic or basic.. but know that water is neutral
Answer:
C is the correct answer here.
2 characteristics of earth's crust??
Answer:
The earths crust is composed by a variety of igneous, metamorphic, and sedimentary rocks. The crust is underlain by the mantle. The crust occupies less than 1 percent of the earths volume.
Your class is participating in a population genetic simulation. You and your classmates are the predators and your prey is candy in a jar: chocolate (AA), chocolate and mint (Aa), and mint (aa). Each time you and your classmates eat one candy, your prey reproduces (more candy is added to the jar). After several generations you observe 80% of the prey remaining in the jar is chocolate (AA). What percent of your remaining prey is mint (aa) assuming that Hardy-Weinberg equilibrium is being followed
Answer:
1%
Explanation:
12. The more genetic variation a population has, the
more likely it is that some individuals will?
a) evolve.
b) migrate.
c) survive.
d) mutate.
Answer:
b migrate
Explanation:
sorry if im wrong
The more genetic variation a population has, the more likely it is that some individuals will migrate.
what is population ?A discrete accumulation identifiable characteristics such as people, animals with the objective of analysis and data collection is called a population.
A population consists of a same group of species who reside in a particular geographical place with their reproductive capacity to interbreed.
In a population Not all individuals are able to survive and reproduce due to genetic variations in them, a local population is restricted to a smaller area or can occupy a larger area, making up for the entire species.
when individuals in local populations spread between other local populations called as metapopulation.
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What is an environmental habitat in your own words ?
Answer:
Explanation:
A habitat (which is Latin for "it inhabits") is an ecological or environmental area that is inhabited by a particular species of animal, plant or other type of organism. ... Human habitat is the environment in which human beings exist and interact. For example, a house is a human habitat, where human beings sleep and eat.
How many cells do you start with for mitosis?
Please help!!! How does the evolution of a predator species rely on the evolution of a prey species?
Prey must adapt to be better at locating and obtaining food. (No links or I will report!!)
A)Predators must adapt to avoid being food.
B)Predators must adapt to be better at locating and obtaining food.
C)Prey must adapt to avoid being food.
Answer:
b
Explanation:
Because they have to be in a place that they have all of the resorces that they need and conditions that they can live in
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Order of the Moon Phases:
1. New Moon - Completely Dark.
2. Waxing Cresent - A very small part of the "RGHT" side is lit while the rest is dark.
3. First Quarter - right half of the moon is lit while the left side is dark.
4. Waxing Gibbous - nearly all the moon is lit while a very
small part on the "LEFT" side is still dark.
5. Full Moon - the whole moon is completely lit.
6. Waning Gibbous - nearly all the moon is lit while a very small part on the "RIGHT" side is dark.
7. Third Quarter - Left half of the moon is lit while the right side is dark.
8. Waning Cresent - a very small part of the "LEFT" side is lit while the rest is dark.
9. New Moon - the moon returns to completely dark and the cycle repeats.
Order of the Moon Phases:
1. New Moon - Completely Dark.
2. Waxing Cresent - A very small part of the "RGHT" side is lit while the rest is dark.
3. First Quarter - right half of the moon is lit while the left side is dark.
4. Waxing Gibbous - nearly all the moon is lit while a very
small part on the "LEFT" side is still dark.
5. Full Moon - the whole moon is completely lit.
6. Waning Gibbous - nearly all the moon is lit while a very small part on the "RIGHT" side is dark.
7. Third Quarter - Left half of the moon is lit while the right side is dark.
8. Waning Cresent - a very small part of the "LEFT" side is lit while the rest is dark.
9. New Moon - the moon returns to completely dark and the cycle repeats.
One end of the rope is vibrated to produce a wave with a wavelength of 0.25 m. The
Frequency of the wave is 3.0 Hz. What is the speed of the wave? *
1)3.00m/s
2)2.50m/s
3)0.75m/s
4)1.25m/s
Answer:
3) 0.75m/s
Explanation:
The wavelength of a wave is calculated using the formula;
λ = v/f
Where!
λ = wavelength of wave (m)
v = velocity or speed (m/s)
f = frequency of wave (Hz)
According to this question, one end of a rope is vibrated to produce a wave with a wavelength (λ) of 0.25 m and frequency (f) of 3.0 Hz.
Using λ = v/f
v = λ × f
v = 0.25 × 3
v = 0.75m/s.
If chemical signals in the cytoplasm control the progression of a cell to the M phase of the cell cycle, then fusion of a cell in G1 with a cell in early M phase would most likely result in the Group of answer choices replication of chromosomes only in the G1 cell transfer of organelles from the G1 cell to the cell in the M phase condensation of chromatin in preparation of nuclear division in both cells exiting of both cells from the cell cycle and into the G0 phase
Answer:
condensation of chromatin in preparation of nuclear division in both cells
Explanation:
Mitosis, as a type of cell division, is divided into Interphase and the Mitotic phase. The interphase further comprises of G1, S and G2 phases while the mitotic phase consists of mitosis and cytokinesis.
Mitosis is a form of nuclear division i.e. separation of genetic material (chromosome). According to this question, chemical signals in the cytoplasm control the progression of a cell to the M phase of the cell cycle.
Since what occurs in the M phase of the cell cycle is nuclear division, then fusion of a cell in G1 with a cell in early M phase would most likely result in "the CONDENSATION OF CHROMATIN in preparation of NUCLEAR DIVISION in both cells".