Answer:
The main consequences of inappropriate land use changes are land degradation and soil quality deterioration through loss of vegetative cover, top soil moisture, infiltration capacity, water storage, soil organic matter, fertility, resilience, natural regeneration capacity, and a lower water table, factors that are ...
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There are advantages and disadvantages to both types of microscopes. Compare and contrast the two types outlined
here. What evidence supports a DISADVANTAGE of the transmission electron microscope?
A)
The beam of electrons used in the transmission electron microscope often
damage the delicate specimens being observed.
B)
C)
The transmission electron microscope magnifies specimens to a much
higher degree than an optical microscope and therefore requires a very
thin specimen.
The transmission electron microscope requires that specimens be put
inside a vacuum chamber so the microscope cannot be used to observe
living specimens.
The typical electron microscope can zoom in at only a few discrete levels
and often specimens are best observed at intervals not reached with this
microscope.
D)
Answer: C
Explanation: I just did it on usa test perp
The transmission electron microscope requires that specimens be put inside a vacuum chamber so the microscope cannot be used to observe living specimens. The correct option is C.
What is electron microscope?The technique of electron microscopy (EM) is used to obtain high-resolution images of biological and non-biological specimens.
In biomedical research, it is used to investigate the detailed structure of tissues, cells, organelles, and macromolecular complexes.
An electron microscope can only be used in a high vacuum. This makes using a microscope to study living organisms impossible because they would evaporate and disintegrate under such conditions.
Transmission electron microscopy is a microscopy technique in which an image is formed by passing an electron beam through a specimen. The specimen is usually an ultrathin section less than 100 nm thick or a grid suspension.
Because the transmission electron microscope requires specimens to be placed inside a vacuum chamber, it cannot be used to observe living specimens.
Thus, the correct option is C.
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The stage where bacteria and digestive enzymatic activity results in the build up of gas is called
1.) black putrefaction
2.) butyric fermentation
3.) initial Decay
4.) putrefaction
Answer:
I believe the answer is 4. putrefaction.
Explanation:
This answer seems to be the correct one.
In addition to the transmission electron microscope (TEM), there is another type of electron microscope that is frequently used for specific purposes when studying cells and tissues, and even whole organisms. This microscope is called a scanning electron microscope (SEM). Use your lab manual, its support resources, and/or the Internet to investigate the use of scanning electron microscopy for biological applications. After gathering this information, please answer the following question. When would it be appropriate to use the SEM rather than the TEM
Answer:
The basic difference between SEM and TEM is that TEM generates an image with the assistance of radiation that goes through the specimen, while the images generated by the SEM take place with the assistance of electrons getting released from the surface of the specimen.
SEM is primarily used to examine the composition of the surface, with the help of SEM one can study the microbes present in the ecological niche like in the lining of the gut and human skin. Due to its great depth, it is considered the electron microscope analog of a stereo light microscope. It helps in providing complete images of the cells present on the surface, which are not easy to get with the help of TEM. Due to its enhanced functionality, it can also be used for size determination and particle counting, and also for process control.
in a school 58% of the total number of students are boys in the number of girls is 814 how many number of students are in the class
Answer:
See below.
Explanation:
Given that 58% of the students are boys, 42% must be girls.
42% = 0.42.
x = unknown number of students
0.42x = 814
x = 1938 (about equal to)
Charles Darwin developed the theory of evolution. Scientific laws and theories are different from one another. Which of the following best describes the differences between scientific laws and theories?
Answer:
C
Explanation:
IM BiuLt DIFFRENT
If the slope of a distance-time graph is steep, then the speed of the object must be
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Answer:
B
Explanation:
Learned about it!!!!!!!!!!!!!!!!!!!!!!!!!
what impact are these practices expected to have on soil pH and why?
Inherent factors that affect soil pH include climate, mineral content, and soil texture. Natural soil pH reflects the combined effects of the soil-forming factors (parent material, time, relief or topography, climate, and organisms). The pH of newly formed soils is determined by the minerals in the parent material.
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Which species are the most vulnerable to fungal infections?
a. Animals
b. Reptiles
c. Humans
d. Plants
Answer:
It depends, those who have weak immunity get the infections fast.
Explanation:
The species that are the most vulnerable to fungal infections are plants but is variable depending on the type of infection.
What is a fungal infection?Fungal infection is any type of disease caused by species from the Fungi kingdom (e.g., Basidiomycota species).
Plants are really susceptible to these type of infections (i.e., fungi infections).In conclusion, the species that are the most vulnerable to fungal infections are plants but is variable depending on the type of infection.
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Can an animal have no digestive system
Answer:no
Explanation:
Answer:
In other words, the platypus has no stomach. The stomach, defined as an acid-producing part of the gut, first evolved around 450 million years ago, and it's unique to back-boned animals (vertebrates).
Explanation:
What is the Ecological Effect of the Vaccine?
please help me arrange this
1.Yellow
2.Blue
3.Pitch
4.Purple
5Green
Ecological succession can end when a community is not replaced by another one. This community is called a "climax community." Using the illustrations, which of the following would dominate the climax community shown in the ecological succession of the pond?
A
tall trees
B
low-growing plants
C
green algae
D
tall-growing grasses
Answer:
a
Explanation:
because it goes with the commen theme
Using the illustrations, the dominant climax community has shown in the ecological succession of the pond is tall trees.
What is a climax community?
An ecological community in which inhabitants of plants or animals remain sturdy and exist in equilibrium with each other and their environment.
A climax community is the final stage of succession, remaining relatively unaffected until destroyed by an event such as fire or human interference.
Thus, option "A" is correct.
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The probability of a white chicken and a black chicken having a checkered chicken is ________
and is an example of ________
A- 50% incomplete dominance
B- 100% co-dominance
C- 100% incomplete dominance
D- 50% co- dominance
The characteristic of being dry is best-associated with which type of air mass?
polar
maritime
tropical
continental
Answer:
Continental
Explanation:
Describe the environment you live in
Answer:
El entorno de donde vives es que tienes que salir afuera mirar que naturaleza hay por ejemplo afuera de mi casa hay un árbol eso es ya una naturaleza afuera hay una calle fuera de mi casa hay animales domesticados afuera de mi casa hay vecinos pero no te confundas estas hablando de la naturaleza así que solo pon sobre las plantas arboles frutos v de lo que es las plantas o naturalezas espero que te sira
Explanation:
corona plis
Please don't give me a wedsite
Answer:
The answer would be the first one
Explanation:
Passive membrane transport processes include ________. movement of a substance down its concentration gradient movement of water from an area of low concentration to an area of high concentration consumption of ATP the use of transport proteins when moving substances from areas of low to high concentration
Answer:
movement of a substance down its concentration gradient
Explanation:
As you may already know, the plasma membrane of a cell has a semi-impermeable nature. This means that the plasma membrane allows only a few very specific substances to pass in and out of the cell. This movement of subtlety can happen in a passive or active way. In an active way, the moment is made through proteins of the membranes. Passively, the movement is made through a concentration gradient, where the substance is able to pass from the more concentrated side to the less concentrated side.
The cell cycle describes the process by which cells divide. Which of the following best describes the processes that occur during the cell cycle?
Cellular division splits the parent cell in half, resulting in two new daughter cells that are half the original size and contain exactly half of the materials in the cytoplasm.
Cellular division splits the parent cell in half, resulting in two new daughter cells that are half the original size and contain exactly half of the materials in the cytoplasm.
Replication only involves the duplication of proteins needed to acquire nutrients from the environment.
Replication only involves the duplication of proteins needed to acquire nutrients from the environment.
Replication involves the duplication of DNA and the organelles in the cytoplasm that are needed for the cell to survive.
Replication involves the duplication of DNA and the organelles in the cytoplasm that are needed for the cell to survive.
Cellular division splits the parent cell into quarters, resulting in four cells that are all identical.
Answer:
1
Explanation:
Cell division involves splitting the parent cell into two identical daughter cells
Hemochromatosis is an inherited disease caused by recessive allele. If a woman and her husband, who are both carriers, have three children, what is the probability of all three children having a normal phenotype
Answer:
27⁄64
Explanation:
A recessive disease is expressed only when an individual carries two copies of the recessive allele (i.e., individuals must be recessive homo-zygous to suffer from the disease). In this case, both parents are carriers for hemochromatosis, i.e., both are heterozygotes carrying the defective allele, thereby the probability of having a child with a normal 'dominant' phenotype is 3/4, i.e., 3/4 individuals are expected to have an A_ genotype (1/2 AA + 1/4 Aa = 3/4), and 1/4 individuals are expected to have an aa genotype (where 'A' is the dominant allele and 'a' is the recessive allele associated with hemochromatosis). In consequence, the probability of having three children with the normal phenotype is 3/4 x 3/4 x 3/4 = 27/64.
Explain how the central nervous system and the peripheral system work together to keep the body activities in balance.
Answer:
Voluntary motions in the skin, bones, joints, and skeletal muscles are controlled by the somatic nervous system. Both of these PNS systems collaborate with the CNS to control physiological functions and offer responses to external stimuli.
Explanation:
The central nervous system and peripheral nervous system work together as the nerves of PNS comes out from CNS and the peripheral nervous system guide the brain and spinal cord to receive signals from the body to work.
What is the nervous system?The nervous system is divided into two parts, the central nervous system, and the peripheral nervous system. The central nervous system consists of the brain and spinal cord. The peripheral nervous system contains all the nerves which came out from the brain and spinal cord.
Both systems work together as the nerves of the PNS connected with the brain and spinal cord. The nerves signal the brain and brain when giving signals, they travel through the nerves to the body.
Thus, together, the central nervous system and peripheral nervous system control how the brain and spinal cord receive signals from the body to function. The central nervous system sends PNS nerves out from the spinal cord.
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In a single sentence, what is Natural Selection?
Answer:
Natural selection is the process through which populations of living organisms adapt and change based on what adaptations help them the most.
Which forms of renewable energy produces waste?
Answer:
1Standard Solar Panels. Many people advise residential and commercial 2building owners to rely on solar panels for their energy needs.
3Daily Biofuel Use.
4Wind Turbine Farms.
5Yearly Coal Consumption.
6Yearly Oil Waste.
6Yearly Natural Gas Waste.
When compared to eukaryotic cells, prkariotic cells
Answer:
Explanation:
Eukaryotic cells and prokaryotic cells have massive differences. Eukaryotic cells are more complex, contain true nucleus, and contain membrane bound organelles. Prokaryotic cells lack nucleus and membrane bound organelles, they are also simpler when compared to eukaryotic cells.
HELP PLSSS, IM SO CONFUSED
What percent of the organisms genetic information is the same as the genetic information of the parent PLEASE HELP FASSTTTTT
Answer:
Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes, which is less than one percent of the total are slightly different between people.
Explanation:
When a tree is cut down, does the amount of carbon inside the tree stay the same, increase or decrease?
Answer:
Decrease, it flows out
Explanation:
Around 30 million acres of forests are lost every year to deforestation, which results in the release of more than 1.5 billion tonnes of CO2. The Rainforest Alliance states that 10 per cent of worldwide emissions are caused by deforestation.
How many offspring would result from a
single bacterium in 8 hours if they
reproduce every 20 minutes? (hint: the
population doubles three times every
hour)
Answer:
16777216
Explanation:
(8*60)/20 = 24 time
2 ^ 24 = 16777216
Look at the graph of different types of vertebrates. Which evidence would support the relationships shown on this graph?
DA graph shows evolution of four animal groups: amphibians, reptiles, birds, and mammals. A graph shows evolution of four
animal groups: amphibians, reptiles, birds, and mammals. The y-axis is labeled Millions of years ago, starting with 300 millions
of years ago, and decreases by increments of fifty millions of years ago to end at zero. The first line is labeled amphibians. It
starts at 300 millions of years ago and goes to zero, present day. The next line starts at 250 millions of years ago. The line
splits at 225 millions of years ago and is labeled reptiles. At 200 millions of years ago, it splits into two lines labeled birds and
mammals. Each line ends at zero, or present day
Omg pls help!!! That would mean a lot!! I also shared the pic as well for help
Answer: If this is the image you are talking about, I am able to answer your question.
These are the answers to the question.
A. Birds and amphibians have no similarities in their amino acid sequences.
B. Reptile embryos are similar to birds but have no similarities with mammals and amphibians.
C. Mammals have more genes in common with birds than with amphibians.
D. Amphibians and mammals have similar traits that are not seen in reptiles and birds.
Explanation: C really just makes the most sense to me. Compare answer C to what is in the picture and you will see what I mean.
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A graph shows evolution of four animal groups:
Amphibians, reptiles, birds, and mammals. The y-axis is labeled Millions of years ago, starting with 300 millions.
What are amphibians?
A cold-blooded vertebrate animal of a class that comprises the frogs, toads, newts, and salamanders. They are distinguished by having an aquatic gill-breathing larval stage followed (typically) by a terrestrial lung-breathing adult stage.
What are reptiles?
A vertebrate animal of a class that includes snakes, lizards, crocodiles, turtles, and tortoises. They are distinguished by having a dry scaly skin and typically laying soft-shelled eggs on land.What are mammals?
A warm-blooded vertebrate animal of a class that is distinguished by the possession of hair or fur. The secretion of milk by females for the nourishment of the young, and (typically) the birth of live young.A. Birds and amphibians have no similarities in their amino acid sequences.
B. Reptile embryos are similar to birds but have no similarities with mammals and amphibians.
C. Mammals have more genes in common with birds than with amphibians.
D. Amphibians and mammals have similar traits that are not seen in reptiles and birds.
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atmosphere is a present around the surface of the earth but it is not present around the surface of the Moon why
Answer:
tmosphere is a present around the surface of the earth but it is not present around the surface of the Moon because
This reduces the amount of gravity on the moon. Strong gravity is needed to hold an atmosphere into place. With weak gravity, gases that are emitted from the surface quickly are lost to outer space. Another reason is because the moon does not currently experience plate tectonics and geologic upwelling. Plate tectonics allows for a recycling of crust and convergence and divergence of plates occurs and this leads to volcanoes and gases escaping at the boundaries. The moon is said to be geologically dead.