A farmer is struggling to control the population of a certain insect on his farm. After researching population control techniques, he discovers that a particular bird is a predator of this insect. The farmer purchases a number of these birds and releases them onto his farm.
How might the farmer’s action most likely have a negative impact on the ecosystem?
The birds will increase biodiversity of native plant species.
The birds will pollinate native species, increasing genetic variation.
The birds will consume beneficial insects, as well as the pest species.
The birds will mate with native birds and create a new species.
One of the effects of the farmer's action on the ecosystem would be that the birds will consume beneficial insects along with the pest species.
Ecological effects of biological pest controlBiological control of pest requires that a living organism that will prey on the pests are introduced into the ecosystem
However, the most effective biological control of pests has to do with introducing biological agents that are very specific in action.
Using a bird species to control insect pests may lead to beneficial insects being consumed along with the insect pest in the ecosystem. The loss of beneficial insects will create a new problem in the ecosystem.
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A couple has three children, two of which have blonde hair. The third child and both parents have dark hair. What can be determined about the gene for hair color in this family
Answer:
Blonde hair color.
Explanation:
it is an autosomal recessive trait
What does the Golgi body
do with materials?
A. destroy them
B. transport them in and out of the cell
C. create them
D. hold them inside the cell
Answer:
B transport them in and out of the cell
Explanation:
It is this Because golgi's make the proteins and ship them to wherever. But if they receive cell's they transport them to where they are needed.
Describe how the body responds to transplants and how doctors are able to successfully perform transplants.
How do pain relievers work?
increase production of white blood cells
increase body temperature
block messages within the nervous system
block hormone production
Answer:
transplants:
increase production of white blood cells
pain relievers:
block messages within the nervous system
Explanation:
body may see the transplanted organ as a foreign object
body may send white blood cells to fight the transplanted organ
doctors often give immuno suppressors to those patients so the organ they received isnt hurt by the white blood cells
Identify the term that best describes the process of collecting a tissue sample from the endocervix and the exocervix with a sampling device that is placed directly into a liquid fixative instead of being spread onto a glass slide.
The term that is used to describe the process of collecting a tissue sample from the endocervix is liquid-based Pap.
What is endocervix?Endocervix is the inner part of the cervix which links the cervix to the uterus.
To examine the cellular structure of the endocervix, a pap smear examination is carried out.
When the pap smear is placed directly into a liquid fixative instead of being spread onto a glass slide it is called a liquid-based Pap.
Therefore, the term that is used to describe the process of collecting a tissue sample from the endocervix is liquid-based Pap.
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5. Which statement best describes the geocentric model of our solar system?
Answer:
Earth is at the center.
Explanation:
The geocentric model is a model system that explains how the planets in the solar system move around.
Ptolemy established the geocentric concept, which states that the earth is at the center of the solar system and that other celestial bodies, including planets and stars, rotate around it.
Nicolas Copernicus invalidated this model system by explaining that the sun is at the center of the solar system and that the planets rotate around it.
Explain how gases that producers need &
produce enter and exit the plant.
Answer:
Carbon dioxide and oxygen cannot pass through the cuticle, but move in and out of leaves through openings called stomata (stoma = "hole"). Guard cells control the opening and closing of stomata. When stomata are open to allow gases to cross the leaf surface, the plant loses water vapor to the atmosphere.
Choose the description that does NOT describe sustainability
Answer:
Use as many as you want even if you don't want to
Explanation:
sustainability is about small changes we can make to help look after the planet. Making these changes helps protect animals, plants and our natural resources so that future generations will be able to enjoy them.
Which compound can only be made if it has access to magnesium ions?
Answer:
Hope it helps
Explanation:
Green plants absorb light in their leaves and convert it to energy by photosynthesis. Temperature, carbon dioxide concentration and light intensity can affect the rate of photosynthesis.Plants need minerals for healthy growth. They are absorbed through the roots by active transport as mineral ions dissolved in the soil water.Magnesium ions and nitrate ions are needed by plants. A plant will not grow well if it cannot get enough of these ions, and it will show symptoms of mineral deficiency. Fertilisers are used to replace minerals used by plants.
Nitrogen fertilisers - such as ammonium nitrate and ammonium phosphate - provide plants with water-soluble sources of nitrogen that they can absorb through their roots. They allow farmers to increase the yield and quality of their crops. However, overuse can cause problems. Eutrophication happens when excess nitrate (or phosphate) enters rivers or lakes from fields. This can lead to the death of fish and other aquatic animals.
Organisms such as jellyfish and sea turtles depend on which ocean movements to find food and avoid predators? *
a. tides
b. waves
c. gravity
d. currents
Answer: D. Currents
Explanation:
A current is the movement of streams under the water. It carries organisms and other matter through the ocean. Jellyfish, although they can swim, mostly rely on currents to float through the water.
Where would a region of nonpolar amino acids be in a folded protein?
in the secondary structure within the ß pleated sheet
in the secondary structure within the a helix
in the tertiary structure within the core of the protein
in the tertiary structure as part of side chains linked by hydrogen bonds
Answer:
third option should be correct
Explanation:
Suggest how the pH of plaque ( of teeth) could be measured safely.
Drag the terms on the left to the appropriate blanks on the right to complete the sentences.
Dragging the terms on the left to the respective blanks to complete the sentences
When two amino acid monomers are positioned so that the carboxyl group of one is adjacent to the amino group of the other, they can be joined through a dehydration reaction. This reaction forms a(n) peptide bond.What are amino acids ?Amino acids are monomers which make up the proteins, while proteins are made up of more than linear chain of amino acids which are known as polypeptide.
Hence we can conclude that the complete sentence is as written above.
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The missing part of the question is missing and I found it online
What hapends to a wave when you increase the dampening
Answer:
As the damping increases, the phase speed decreases, but the group speed actually increases
Explanation:
I hope this helps! :)
4.. Which of the following best explains why
pulmonary arteries have lower oxygen
and higher carbon dioxide levels than
veins have?
(A) Pulmonary arteries have blood that has been
saturated by oxygen.
(B) Pulmonary arteries carry blog from the heart
to the lungs.
(C) Pulmonary veins carry
from the lungs
to systemic tissues.
(D) Pulmonary veins diffa their oxygen to
pulmonary arteries
(E) Systemic capillaries rculate blood to
pulmonary veins
ama Na
Body Temperature Control Control of body temperature is important for maintaining homeostasis, particularly in areas where temperature varies widely with time of day and with season.
- An ectotherm is an animal whose regulation of body temperature depends mostly on its relationship to sources of heat outside its body. Most reptiles, invertebrates, fishes, and amphibians are ectothermic.
- An endotherm is an animal whose body temperature is regulated, at least in part, using heat generated by its body. Birds and mammals are endothermic.
5. List three features that animals need in order to control their body temperature.
Answer:
The features are
The thyroid glandsThe musclesThe skin.In the 1970s, staghorn corals dominated Caribbean reefs. Since that time, staghorn corals have declined by over 90% and are now classified as critically endangered. What do you think are the causes of this decline, and why do you think staghorn is so vulnerable?
The major cause of staghorn corals decline is, that some organisms in the same aquatic environment affect them negatively and harm them a lot.
What do you mean by Corals?Corals may be defined as marine invertebrates organisms that are composed of colonies of skeletons underwater bodies.
Staghorn is so vulnerable because its branches are so fragile and break by any disturbances. This causes the staghorn to ultimately disintegrate and die.
Therefore, it is well described above.
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what is the medial indentation on the kidneys called
The medial indentation on the kidney called hilum....
hope it's help ;)
This is a short, white and fluffy
feather. What type of feather
is this?
A. Pennaceous
B. Down
C. Contour
D. Flight
Answer:
letter B is the answer
Explanation:
down yes letter b
Ddt was widely used as a pesticide for 20 years. Its use was banned after studies showed severe side effects were evident in humans, the environment, and animals as a result of ddt. Which reason best explains why the side effects of ddt were so harmful?.
Answer:
One major side effect of DDT was the extreme damage to bird populations. DDT caused the shells of bird eggs to become extremely thin, which made them prone to breaking from minor disturbances and failing to thrive due to temperature regulation issues. It also slowly poisoned animals, especially birds that fed on insects that were poisoned by DDT. A notable bird species that was affected by DDT is the bald eagle. At one point in the 1960s, bald eagles nearly went extinct due to various effects of DDT. The threat of one of the most recognizable animals in America going extinct led to lawmakers trying to ban DDT.
Why is it important to protect ecosystems? What could happen to the biotic and abiotic factors if we don’t take care of them?
What would be the impact on the organism and the biomes?
A rise in temperature in the tundra for the polar bears:
A decrease in rainfall for the flowers in the rainforest:
A decrease in temperature for jackrabbit in the desert:
An increase in temperature for the black bear in the temperate deciduous:
Why is it important to protect ecosystems? What could happen to the biotic and abiotic factors if we don’t take care of them?
It protects the resources and organisms that depend on one another in the ecosystem
What would be the impact on the organism and the biomes?
A rise in temperature in the tundra for the polar bears:
They would get overheated since they are prepared for the colder temps with their fur-also causes the ice to melt and alter its food supply
A decrease in rainfall for the flowers in the rainforest:
They would likely die due to a lack of water
A decrease in temperature for jackrabbit in the desert:
They would get very cold since they are used to the extreme heat
An increase in temperature for the black bear in the temperate deciduous:
They would get very hot and be trouble due to their fur and dark coloring
Refer to picture:
Kavinsky
Which combinations of traits would be possible in future generations if the genes for fur color and eye color assort independently? Select all possibilities.
Answer:
the answer would be black fur, black eyes and white fur , red eyes
Explanation:
Which of the following characteristics is true of dicot plants?
netted pattern of leaf veins
two cotyledons in seed
vascular bundles arranged in a circle
All of these choices are correct.
Dicot plants are the plants having two cotyledons as the name suggest. In these plants, the veins of the leaf have a net-like appearance, forming a pattern known as reticulate venation, and the vascular bundles arranged in a circle, i.e., option D, all choices are correct.
What are the examples of dicot plants?Most dicot plants are common garden plants, shrubs and trees, and broad-leafed flowering plants such as magnolias, roses, and geraniums.
These typically also have flower parts which are based on a plan of four or five or multiples with some exceptions.
They have net leaves vein pattern, two cotyledons, and ring shaped vascular bundles.
Thus, the correct option is D.
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state the difference between the synthesis and the breakdown of a protein. thanks!
Synthesis of protein is the building up of protein molecule while the breakdown of protein is the degradation of the protein molecule.
What is protein?Protein is one of the biological molecules that present in living organisms and contain it's building blocks known as amino acids.
The synthesis of protein is the process used by living organism to produce proteins from amino acids (that is the building block).
The breakdown of protein is the degradation of protein molecule which is also called catabolism.
Therefore, the difference between protein synthesis and breakdown is that synthesis of protein is the building up of protein molecule while the breakdown of protein is the degradation of the protein molecule.
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The diagrams A and B below show a student moving the same boxes in
two different ways. In diagram B, the student is using wheels, which are
part of a simple machine.
It will be easier for the student to use wheels to push the boxes in
diagram B because there is
(A) less mass
(B) less friction
(C) more gravity
(D) more erosion
What year did the scientist start collecting data about perch height of the green anoles
May 1995 is when they started collecting data about the perch height of the Green Anoles.
You have been asked to speak to a high school class about the clinical aspects of your job. in particular, the students are interested in microbiology because they have just completed a unit on microorganisms in class.
what would you tell them about your functions as a medical assistant?
what would you say to those who asked if you looked through the microscope and reported your findings?
one student asks what type of training one would need to work solely in microbiology in a laboratory setting. how would you answer her?
Answer:
that they have to discuss it
The functions of a medical assistant are to Update and file patient medical records. Coding and filling out insurance forms. Scheduling appointments. Arranging for hospital admissions and laboratory services.
What can you see when you look through a microscope?A microscope is an instrument that is used to magnify small objects. Some microscopes can even be used to observe an object at the cellular level, allowing scientists to see the shape of a cell, its nucleus, mitochondria, and other organelles.
What do you see under a microscope?A microscope is a device used to magnify small objects. Some microscopes can also be used to observe objects at the cellular level, allowing scientists to see the shape of cells, their nuclei, mitochondria, and other organelles.Why is it important to know about the microscope?A microscope is a tool that allows you to take a closer look at an object and see beyond what you can see with your eyes. Without them, we don't know how cells exist, how plants breathe, or how rocks change over time.
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the second law of thermodynamics states that?
Answer:
"As energy is transferred or transformed, more and more of it is wasted."
Explanation:
Answer:
"As energy is transferred or transformed, more and more of it is wasted."
In this case the second law of thermodynamics (in the simplified form presented here) says that no matter what process takes place inside the container, its entropy must increase or remain the same in the limit of a reversible process...
Explanation:
The second law of thermodynamics states that as energy is transferred or transformed, more and more of it is wasted. It's one of the four laws of thermodynamics, which describe the relationships between thermal energy, or heat, and other forms of energy, and how energy affects matter...
The second law of thermodynamics says that when energy changes from one form to another form, or matter moves freely, entropy (disorder) in a closed system increases. Differences in temperature, pressure, and density tend to even out horizontally after a while...
The second law of thermodynamics describes the nature of processes and chemical reactions as follows: processes occur spontaneously if and only if by their process, the entropy change in the universe, is greater than or equal to zero…
Second law of thermodynamics:Statement,examples and applications. The second law of thermodynamics states that heat can flow spontaneously from a hot object to a cold object; heat will not flow spontaneously from a cold object to a hot object. Carnot engine, heat engine are some examples of second law of thermodynamics .....
The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object. The acceleration of an object depends directly upon the net force acting upon the object, and inversely upon the mass of the object.
Why is the second law of thermodynamics so important? Second law of thermodynamics is very important because it talks about entropy and as we have discussed, 'entropy dictates whether or not a process or a reaction is going to be spontaneous'...
His formulation of the second law, which was published in German in 1854, is known as the Clausius statement: Heat can never pass from a colder to a warmer body without some other change, connected therewith, occurring at the same time. The statement by Clausius uses the concept of 'passage of heat'...
“The first law of thermodynamics also known as the law of conservation of energy states that energy can neither be created nor destroyed, but it can be changed from one form to another.” “The second law of thermodynamics states that the entropy in an isolated system always increases.”
what happens to bacterial growth after 40∘ c
Answer:
It depends on the type of bacteria.
Explanation:
Without more information, it would be impossible to tell what would happen to bacterial growth after 40 C. Some bacterial growth will slow, some will undergo a population explosion.
Why do we soak a seed in water before sowing in the soil?
Answer:
we do it to select the best seeds
the seeds floating on the top are bad seeds which are empty inside
the seeds that are on the bottom are good seeds they are heavy