Answer:
Humus is dark, organic material that forms in soil when plant and animal matter decays.
Which of the following best explains the importance of Earth’s crust to living organisms? a. The continental crust allowed the evolution of life on land. B. The crust provides raw materials necessary for life. C. The crust allowed the formation of fossil fuels. D. The rock cycle recycles sedimentary rocks formed from animal shells. Please select the best answer from the choices provided A B C D.
The statement 'the crust provides raw materials necessary for life' best describes the interaction between Earth's crust and organisms. It is fundamental for the biogeochemical cycles.
Earth's crust consists of a tiny layer on the outside of Earth that accounts for less than one percent (1%) of Earth's volume.
The Earth's crust is essential in biogeochemical cycles that support the continuity of life on the Earth planet.
These biogeochemical cycles include, among others, the carbon cycle, nitrogen cycle, phosphorous cycle, etc.
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1. Explain the function of white blood cells in the body.
2.
How is a red blood cell adapted to carry
oxygen and nutrients throughout the body? Explain
3.
What would happen to us if no platelets
are found within the blood again. Explain.
4. Give the general (collective) functions of the blood
Answer:1. White blood cells are part of the body's immune system. They help the body fight infection and other diseases.
2. Red blood cells have adaptations that make them suitable for this.
3. The blood would not clot in case of an injury.
4. Blood supplies essential substances and nutrients.
Explanation: 1. White blood cells are able to recognize viruses and/or infectious germs, which is how they fight off disease/sickness. It is also why we have vaccines. Vaccines put either dead or weakened parts of a germ into your body. Then, the white blood cells recognize it and fight it off the next time it enters your body.
2. They contain hemoglobin, a red protein that combines with oxygen. They have no nucleus so they can contain more of the hemoglobin. they are small and flexible so that they can fit through narrow blood vessels.
3. This will lead to excess blood loss and can even lead to the death.
4. Such as as sugar, oxygen, and hormones to our cells. It also carries waste away from the cells, this waste is eventually flushed out of the body in urine, feces, sweat, and lungs.
Homeostasis is necessary for a cell to survive. What is the definition of homeostasis
Answer:
Homeostasis is the process of maintaining a constant internal environment suitable sustaining life.
Homeostasis continues to maintain ideal environment for enzyme action and all cell functions throughout the body.
Why homeostasis is necessary?It is the preservation of a constant internal environment in the face of changing internal and external conditions. These include blood glucose concentration control in the human body.
A series of control mechanisms at the organ, tissue, or cellular level maintain homeostasis.
Substrate supply, activation or inhibition of individual enzymes and receptors, enzyme synthesis and degradation, and compartmentalization are examples of control mechanisms.
The liver, pancreas, kidneys, and brain (hypothalamus, autonomic nervous system, and endocrine system) all contribute to homeostasis.
The liver is in charge of metabolizing toxic substances and maintaining carbohydrate metabolism with pancreatic signaling.
Thus, homeostasis is necessary for a cell to survive.
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why a genetic bottleneck can be an important evolutionary factor for a species
Answer:
Genetic drift decreases genetic diversity within a population.
Explanation:
Genetic drift decreases genetic diversity within a population. It is a change in allele frequencies due entirely to random chance and is more likely to affect smaller populations than large ones. Population bottlenecks can lead to genetic drift.
To read signs, you need to have good ________ . focal vision peripheral vision paracentral vision double vision
To read signs, one needs good peripheral vision. The capacity to see things that are beyond of one's direct line of sight is known as peripheral vision. It is the capacity to perceive things that are beyond of one's direct field of vision.
Because it enables a person to perceive items that are situated at the boundaries of their peripheral vision, this form of vision is crucial for reading signs.
For instance, it's crucial to be able to understand signs that are placed along the side of the road when driving. A person might not be able to see the signs and might miss crucial information without adequate peripheral vision. Aside from peripheral vision, clear focus vision is crucial for reading.
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In this pedigree, 1-2 is
because they are shaded in.
Answer:
is affected ( has the trait)
Explanation:
Proteins are polymers of amino acids linked by ______. Multiple choice question. hydrogen bonds phosphodiester bonds covalent bonds peptide bonds
Answer:
peptide bonds
Explanation:
Amino acids are linked together into linear chains called polypeptides
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Why are hydrogen bonding and popularity so important for water molecules?
Answer:
they are so important because the presence of hydrogen bonds also makes water molecules more 'sticky' or in scientific terms cohesive and adhesive. The small charges on the water molecules allows them to stick together which is why water has a 'skin' that small insects can walk on, and also explains why water can be sucked up a straw so easily.
Explanation:
I hope this helps you!
List three limitations for measuring cell size
Answer:
Cell size is limited by the cell's surface- area- to - volume ratio
Can someone plz help me? :(
Answer:
D - design a device that can throw an object at least 15 metres
Answer:
D. Design a device that can throw an object at least 15 meters.
Explanation:
First of all, the object shown as you may be able to tell, look like a catapult. It also shows the top end of it holding a ball, getting ready to launch it. It then shows a line of the ball traveling after being launched. The balls land of the ground at 15 meters. From this iformation you look at the options:
A. Design an object that is 10 meters tall.
No, because 10 meter is just the highest point of the ball being launched.
B. Design a vehicle that can travel across a 10-meter feild.
No, because it is the ball that is traveling, not the catapult.
C is about a vehicle traveling again, so eliminate that too.
D. Design a device that can throw an object at least 15 meters.
This describes exactly what we soo in the picture. Meaning D is correct.
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What is the difference between community and ecosystem?
Please help
Answer:
Ecosystems are composed of all of the various living organisms, along with the abiotic factors that impact them. The difference between community and ecosystem in ecology is that the community only refers to living things within an ecosystem. A sample of soil can provide a small-scale example.:
Neurotransmitters that do not bind with the postsynaptic neuron are sometimes taken back up into the presynaptic neuron in a process called
Answer:
Reuptake
Explanation:
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what type of cells assist with the take up of microbes in the intestine and release them on the other side for macrophages?
Answer:
specialized cells that take up microbes from the intestine and release them on the other side for macrophages defensins
(if im wrong sorry i have to answer a question so I don't have to have ads)
Answer:
a
Explanation:
a
What were the physical conditions of the Earth? Where is the evidence to support this claim?
Answer:
Water earth fire and rain hurricanes fire tornados etc
Explanation:
There are millions of physical conditions but that's the only ones I could think of.
Just for the fun of it, someone walking along the shore in Beaufort, South
Carolina, throws a bottle with a message in it into the sea. Some time later,
someone in Perth, on the west coast of Australia, finds the bottle.
Referring to map, trace the path the bottle probably took! Make sure to
reference specific currents on your path.
The currents that carry the bottle from South Carolina to Peth are the West Wind Drift and the South Equatorial Current.
According to the information provided by the map, it can be inferred that the bottle that is thrown into the sea in South Carolina, USA and arrived in Perth, Australia took the following route:
It traveled down the Atlantic Ocean from the United States to the West Wind Drift current. Once there, it is transported from the west to the east, passing through the lower part of Africa and Asia until it reaches the Indian Ocean. When it reaches the Indian Ocean it is carried by the South Equatorial Current with a northeast direction. In this direction it reaches the coast of Peth, Australia.
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For people who need to study this
Answer
ok
Explanation:
Answer: okay thank you sir!
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Which of the following best describes the components of the DNA twisted ladder?
A. The sides are made of alternating polypeptide chains, and the rungs are made of amino acid segments joined by
hydrogen bonds
B. The sides are made of alternating amino acids, and the rungs are made of polypeptide chains joined by hydrogen bonds.
C. The sides are made of alternating phosphate-sugar groups, and the rungs are made of complementary nitrogenous
bases joined by hydrogen bonds
D.The sides are made of alternating nitrogenous bases, and the rungs are made of phosphate-sugar groups joined by hydrogen bonds
The sides are made of alternating phosphate-sugar groups, and the rungs
are made of complementary nitrogenous bases joined by hydrogen bonds
DNA which is also called Deoxyribonucleic acid contains genetic information
which are passed from the parent to offspring. DNA is made up of an
alternating phosphate-sugar group in which the sugar is deoxyribose.
The alternating phosphate-sugar group are located at the side of the ladder.
The rungs are made up of complementary nitrogenous bases joined by
hydrogen bonds. Example of nitrogenous bases include adenine, thymine,
guanine and cytosine.
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How does a plants structure contribute to its ability to perform photosynthesis
Answer: 1. Leaves have a large surface area; this allows them to absorb more sunlight. They are also thin, meaning that carbon dioxide has a shorter way to travel.
2. stomata allow the entrance of carbon dioxide. The more complex adaptations are of the internal leaf structure.
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The following tracking model was created for Hurricane Ike on September 8, 2008. ^^
According to this model, at which point is the storm least likely to make landfall?
1) Point A
2) Point B
3) Point C
4) Point D
Answer:
Its Point A
Explanation:
The following tracking model was created for Hurricane Ike on September 8, 2008. Map of Gulf Coast showing the forecasted path of Hurricane Ike on September 8, 2008. The storm’s current location, as of 5 p.m. on Friday, is just south of Cuba, over the Caribbean Sea. The “cone of probability” extends northwest. Point A is located along the Texas coast, right in the center of the cone’s widest point. Point B is located along the coast of Louisiana, toward the easternmost edge of the cone. Point C is located further east, along the coast of the Florida Panhandle. Point D is located on the border between Mexico and Texas, toward the southwestern-most edge of the cone. According to this model, at which point is the storm least likely to make landfall?
Multiple choice. Please help !!!!
Answer: B. if im correct.
Explanation:
answer is b
it says my answer has to be 20 letters long
please answer this. what is it
Answer:
B: mountain lions porbably outcompete wolves for food.
Lake Victoria, shown in the population map above, is the largest lake in Africa
and is home to fish called cichlids (pronounced SIK-lids). In the 1950s, a new
fish, the Nile Perch, was introduced into Lake Victoria. This map shows the
change in the cichlid population since the Nile Perch was introduced.
Use the map above to answer the questions below.
1. Using a Key In which year was the number of cichlids the greatest?
2. Using a Key How many years did it take for the cichlid population to decrease
by 50 percent?
3. Inferring Relationships Which fish in Lake Victoria do you think is higher on
the food chain
the cichlid or the Nile Perch? Explain your answer.
4. Identifying Trends Based on the rate of decrease of cichlids shown on the map,
what do you think will happen to the cichlid population by 2050? Explain your
answer.
In terms of structure and function how do the vacuoles in a typical plant cell compare to those of a typical animal cell
Answer:
Vacuoles in animal cells do NOT help the cell take its shape, however, in plant cells, vacuoles are larger, and DO affect the shape of the cell.
The function of the vacuole in plants is different from that in animals, as the vacuole in animals is smaller, while in plants it is larger and pushes the nucleus to one side while consisting of water and other materials.
What is the significance of the vacuole in plants and animals?Vacuoles are cell organelles found in both plants and animals, in plants, vacuoles are large, fluid-filled structures that occupy a large portion of the cell, and they perform several important functions, including storing water and helping to maintain the shape of the cell, while in animals, vacuoles are smaller and less in number than in plants, as they have a variety of functions, like storing waste materials, etc.
Hence, the function of the vacuole in plants is different from that in animals, as the vacuole in animals is smaller, while in plants it is larger and pushes the nucleus to one side while consisting of water and other materials
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which french cheese was called the king of the cheeses?
Roquefort is the king of cheese.
Which two types of RNA are joined together by base pairing a codon with an anticodon ?
A- tRNA and rRNA
B- mRNA and rRNA
C- tRNA and itself
D- mRNA and tRNA
Answer:tRNA (translate rna) and mRNA(messenger rna).
Explanation:
what biotic factors are in freash water moderat rivers?? (list atleast 4) please
Answer:
algae,fish and bacteria and aquatic invertebrates
Explanation:
Because how would the economy work without half of these things
Describe the composition of the cell membrane
Explanation:
With few exceptions, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains. Glycerol is a three-carbon molecule that functions as the backbone of these membrane lipids.
Human cells have 46 chromosomes. Each chromosome consists of a pair of identical chromatids attached together by a structure called a centromere. Once the chromosome has split, each chromatid is called a daughter chromosome. At the end of cytokinesis, how many daughter chromosomes will be found in each cell? Explain.
Answer:
92 daughter chromosomes.
Explanation:
There are 46 chromosomes in a normal cell and each chromosome turns into 2 daughter cells. So 46 plus 46 is 92.
A blood sample consists of dead cells that are breaking apart into their basic molecular building blocks. What type of molecule is best suited for identifying the specimen
Answer:
D N A!!!!
Explanation:
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what land forms are created by wave and deposition?
Answer: It can create unique landforms, such as wave-cut cliffs, sea arches, and sea stacks. Deposits by waves include beaches. They may shift along the shoreline due to longshore drift. Other wave deposits are spits, sand bars, and barrier islands.
Explanation: