The pH of pure water is considered to be neutral so it has a pH of 7. However, if you have water that falls below this range, the solutions or substances are considered to be be more acidic than than normal water. On the other hand, if you have water above 7, it is considered alkaline or basic.
In the process of distillation, during condesation the temperature of water decreases Hence absorption of CO2 takes place and some H2CO3 is formed. This is an acid (though very weakly) so water turns acidic. Double distillation enhance this so theoritical pH is 7.0 but practically less than 7.0 (6.2 to 6.8)
Global phytoplankton levels
a. decrease in the summer and increase in the winter
b. remain the same in the summer and winter
c. increase in the summer and decrease in the winter
Answer:
sry i still dont know
Explanation:
Select the correct answer.
Kate is studying the transformation from unicellular to multicellular organisms. Which metaphor is the most appropriate to apply to the map of the timeline?
A.
the "food chain"
B.
the "circle of life"
C.
the "tree of life"
D.
the "biological ladder"
Answer:
Option D, the "biological ladder"
Explanation:
The food chain is the network of organism in which all are dependent on each other for their food, energy source and survival.
The circle of life depicts the time frame starting from origin of a life form till its death and the intermediate stages.
The tree of life basically determines which organism has evolved from which other organisms.
The biological ladder represents the development of species from simple form to a much complex form.
Hence, option D is the right metaphor
Answer:
Explanation:
C
Can somebody help me?
Answer:
Nervous system
Explanation:
Answer:
nervous system
Explanation:
The nervous system tells your muscles when to move, and gathers information.
4 pts
The United States banned chlorofluorocarbons in aerosol cans. These actions became a
global movement and let to an international agreement on the ban. Which environmental
concern were governments directly addressing by eliminating the use of
chlorofluorocarbons in aerosol cans?
Tim
Atte
40
Dependency of fossil fuels.
Melting of icecaps.
Salinity levels in the ocean.
Levels of stratospheric ozone.
Previous
Next >
Answer:
Impact as greenhouse gases
CFCs were phased out via the Montreal Protocol due to their part in ozone depletion. However, the atmospheric impacts of CFCs are not limited to their role as ozone-depleting chemicals.
Explanation:
What is carrying capacity?
the maximum number of organisms that can
live in a population
the ability of the environment to provide
resources for a growing population
the maximum number of organisms an
environment can support for a long time
the maximum number of species that can
live in an ecosystem.
Answer:
The maximum number of organisms an environment can support for a long time
The maximum number of organisms an environment can support for a long time.
What is carrying capacity?Carrying capacity refers to the maximum population size of a particular species that a given ecosystem or environment can sustain indefinitely. It represents the balance between the resources available in the environment and the needs of the population. Once the population reaches the carrying capacity, the available resources may become limited, leading to increased competition for food, water, shelter, and other necessities.
This can result in population stabilization or fluctuations as the ecosystem tries to maintain equilibrium. Understanding the carrying capacity of an environment is important for managing and conserving populations and maintaining the long-term sustainability of ecosystems.
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True-breeding pea plants have either spherical seeds or dented seeds with spherical being the dominant phenotype. A genetic cross between two F1-hybrid pea plants for spherical seeds will yield what percent of plants with a heterozygous genotype in the F2 generation?
A. 0%
B. 25%
C. 50%
D. 75%
A genetic cross between two F1-hybrid pea plants for spherical seeds will yield 50% of plants with a heterozygous genotype in the F2 generation. Thus, the correct option for this question is C.
What is a Genotype?A genotype may be defined as the ultimate combination of alleles of those genes that are subsequently selected for specific study in order to reveal some genetic facts and traits of an individual.
According to the question, the two F1-hybrid pea plants for spherical seeds have the genotype of Rr and when these two genotypes are crossed with one another, it produces offspring with the genotypes RR, Rr, Rr, and rr. In this set of offspring, 2 of them have heterozygous genotypes.
Therefore, a genetic cross between two F1-hybrid pea plants for spherical seeds will yield 50% of plants with a heterozygous genotype in the F2 generation. Thus, the correct option for this question is C.
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I require assistance. Oil is a fossil fuel used to run cars, heat up homes, and produce electricity. Oil can be removed from the bottom of the ocean through drilling. Drilling machines dig deep down into the Earth. When oil is found, pipes carry it to the surface. Sometimes, accidents happen that cause the oil to spill into the oceans. The oil can not only kill marine organisms, but when it reaches the surface of the water, some chemicals evaporate, become part of the atmosphere, and pollute the air.
Based on the passage, which resources and organisms are affected by oil spills? Select three options.
A. air
B. land
C. water
D. birds in the air
E. trees on land
F. organisms in water
Answer:
(A) air (C) water (F) organisms in water. I did it and picked (A) (C) and (F) and they were correct
Explanation:
give brainliest please
hope it helps
Many resources are affected by oil spills like air water land and the organisms in water are also affected.
What is an oil spill?When a liquid petroleum hydrocarbon is discharged into the environment, particularly the marine environment due to human activities, it is known as an oil spill.
What resources are affected by the oil spill?Water: It forms a layer over the water. It causes the death of marine organisms. It releases toxic components.Air: petroleum is made up of many components. Some are light and toxic like benzene, xylene, toluene and ethylbenzene. These are released into the air and pollute itLand: When spilled on land it prevents the absorption of water in the soil and hence affects the flora.What organisms are affected by the spill?Marine organisms are affected by the oil spill. It has a toxic and lethal effect on organisms.The insulating ability of fur-bearing mammals is affected.livers become large and the rate of respiration changes.the fin of fishes are eroded.reproduction is also adversely affected.To learn more about the oil spills and petroleum here,
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make a claim about how related tuna, turtles, and chimpanzees are to humans. use evidence to support the claim and explain your reasoning
Answer:
Animals that form part of the tree of life
Explanation:
The tree of life is a diagram used in evolutionary biology to organize life into categories and to classify different species. In this case, tuna, turtles, and chimpanzees and humans are species that can be grouped in the animal category, within the vertebrates group (chordate phylum), being it the most inclusive level at which all these species belong.
Which of these is not a natural earth cycle?
rock
water
carbon
oil
Answer:
The answer is oil .
Explanation:
Oil is not a natural Earth cycle.
(Correct me if I am wrong)
Which of the following is not a good way to manage stress?
A. Get enough sleep
B. Eat a healthful diet.
C. Spend most of the time alone.
D. Get plenty of exercise.
This cycle uses super-heated water from
underground to give us power
geothermal
solar
nitrogen
oxygen
body tissues are system of specialized cells that carry out common function. How are proteins and body cells related?
Answer:
Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs. ... There are 20 different types of amino acids that can be combined to make a protein. Both do most the work.
Explanation:
Answer:
Proteins are large, complex molecules that play many critical roles in the body. They do most of the work in cells and are required for the structure, function, and regulation of the body's tissues and organs. ... There are 20 different types of amino acids that can be combined to make a protein. Both do most the work.
Explanation:
Sunlight enables plants to use water and carbon dioxide during photosynthesis to make and store sugar. Any animal that eats the plants can convert the sugar into the energy it needs to move from place to place. Which three types of energy are involved in this example?
Answer:
Solar energy, Chemical energy and Mechanical energy
Explanation:
Sunlight enables plants to use water and carbon dioxide during photosynthesis to make and store sugar:
The type of energy utilized here is solar energy. The energy from sunlight which is the solar energy is captured by the chlorophyll in plants enabling them use water and carbon dioxide to produce their own food.
Any animal that eats the plants can convert the sugar into the energy it needs to move from place to place.
The energy from the sun which is the solar energy is converted into chemical energy, and the animal that eats this plants gains some of this energy and converts it to mechanical energy, the energy needed to do work: motion energy e.g. moving from place to place.
Answer:
Light energy from sun
Chemical energy
Kinetic energy.
Explanation:
Light energy is gotten from sunlight which is use with carbondioxide and water to produce sugars.
The chemical energy is the substance that undergo chemical reaction to produce another substance. The light energy cause a chemical reaction that breaks carbondioxide molecules and water to produce sugars.
After the animal eat the food, it's get chemical energy and it's is converted to kinetic energy for movement.
Kinetic energy is the energy posses by a body in motion.
Explain how the percentages of nitrogen, oxygen and carbon dioxide in the Earth’s atmosphere today have changed from the Earth’s early atmosphere.
Explanation:
The early atmosphere was mainly carbon dioxide and water vapour. Water vapour condensed to form the oceans. Photosynthesis caused the amount of carbon dioxide to decrease and oxygen to increase.
Earth has its own atmosphere which is made up of various gaseous such as carbon dioxide, water vapour, oxygen and etc
There are various activities that change the composition of the earth atmosphere.
DeforestationExcessive use of fossils fuelEmission of carbon dioxideThe earth atmosphere has 78 per cent nitrogen, 21 per cent oxygen, 0.9 per cent argon, and 0.1 per cent other gases.
During the activities perform as mentioned the composition of the earth is changed and the amount of carbon dioxide is increased by 0.01 %.
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A trait can also be called a/an
Answer:
sort of personality
Explanation:
it just makes sense
phenotype that is the answer.
What part of a fish creates balance and helps with escape and predation?
How much energy do consumers obtain when they eat
Answer: it’s 10%
Explanation: Primary consumers only obtain a fraction of the total solar energy—about 10%—captured by the producers they eat. The other 90% is used by the producer for growth, reproduction, and survival, or it is lost as heat. You can probably see where this is going. Primary consumers are eaten by secondary consumers.
mention one difference between biogas and biodiesel
Answer:
Biogas is produced mostly from waste materials . Landfills ,manure , sludge from the waster water treatment . And the agricultural waste .
While the biodiesel in the EU is produced by rapeseed or oil crops that are used in food .
Explanation:
Which nutrient is necessary for growth and tissue repair?
Carbohydrates
Minerals
Proteins
Vitamins
Answer:
proteins
Explanation:
proteins increase metabolism and repairing damaged cells
Answer:
protien im doing the test right now
Explanation:
In a population of spiders there are three different sizes: small, medium, and large. ---The large spiders are easily seen by predators. ---Small spiders have a difficult time finding food. What will most likely happen to this population of spiders after many generations?
Answer: Over time the medium spiders will be most common out of the three.
Explanation: Because of natural selection the large and small spiders wil die leaving more medium spiders alive. So now the medium spiders can reproduce and make more medium spiders so there will be much more medium spiders compared the the small and large ones.
Members of which of the following phyla have the most species that parasitize humans?
A. Porifera
B. Mollusca
C. Echinodermata
D. Platyhelminthes
Answer:
Platyhelminthes
Explanation:
what stage of the cell cycle happens last?
Answer:
Cytokinesis
Explanation:
The last stage of the cell cycle is cytokinesis, or the division of the cytoplasm. In animal cells the cell membrane pinches in half. In plant cells, a new cell wall begins to grow in an area called the cell plate located between the two new nuclei until they are separated into two new cells.
Pilar wants to plant a garden to grow food in her backyard. She has measured the soil pH and it found it to be 5.73. Pilar does not want to add chemicals to the soil. Instead, she would like to plant foods that will grow well in the soil at its current pH. She studies the chart of soil pH tolerance for various plants. Which foods should Pilar plant?
Choose the correct answer.
lettuce, asparagus, and raspberry
asparagus, pumpkin, and cucumber
cucumber, blackberry, and raspberry
blackberry, raspberry, and blueberry
Answer:
C
Explanation:
Plants with the above PH are said to be suited for acidic soils. Raspberry suited for soil between 5.5-6.5
Blackberry is 5.0-6.0
Cucumber is 5.5-7.0
So the above value falls within that these ranges.
What information is lost if only scientific results are reported and the historical context
is not considered? Is this lost information relevant if the science gets done?||
Answer: Literature review
Explanation:
The literature review is important to cite the previous information about research conducted earlier and taken as a reference for the present study. It may contain the principle, methodology and other information which can be used in the current research. The literature review makes the information of the current research valid and authentic, thus it is considered valid.
Explain the role of co-dominant alleles in human ABO blood groups.
Answer:
Co-dominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed. So if an individual inherits allele A from their mother and allele B from their father, they have blood type AB. Suzanne Hart, Ph.
Explanation:
Great Elephant Census
Answer:
"The Great Elephant Census (the largest wildlife survey in history) was an African-wide census designed to provide accurate data about the number and distribution of African elephants by using standardized aerial surveys of hundreds of thousands of square miles or terrain in Africa.
Explanation:
"The final results from Great Elephant Census show 352,271 African savanna elephants in 18 countries, down 30% in seven years"
Soil at the shore of Lake Erie in Pennsylvania has a high sand and gravel content. Which of the following is a characteristic of this type of soil?
A) extreme acidity
B) rapid water drainage
C) extensive producer biomass
D) significant depth before hitting bedrock
Answer:
rapid water drainage
Explanation:
These are example of granular (sand and gravel)soils.They are more permeable to water, and therefore can not retain water molecules.They are non-cohesive soil,with high strength and capacity to withstand slope.
High acidity is not a characteristic feature of soil with sand and gravel.In addition, such soil lacks biomass therefore can not support plant growth. The soil type is not a yardstick to determine the dept of soil type.Consequently, rapid water loss due to porosity is the best option.
Wassup so who want to help a gangsta out
Answer:
bpm (electrocardiograph), seconds (clock), meters (not sure), Fahrenheit/Celsius (thermometer), liters (beaker)
Explanation:
Uranus is unique because it is the only planet
discovered by mathematical calculations
that rotates on its side
with an atmosphere
with rings
Answer:
rotates on it's side
Explanation:
Which phrase describes short-term environmental changes?
occur over thousands to millions of years
occur over minutes to hundreds of years
have little to no impact on organisms
are slow-building and offer advanced warning
Intro
Done
ous Activity
Answer:
Occur over minutes to hundreds of years
Explanation:
Answer:
Answer:
Occur over minutes to hundreds of years
Explanation: