Answer:
True
Explanation:
Development, together with globalization, drove severe changes at a global level. The natural and original environments suffered from these effects and still are.
Human beings have constantly been altering the natural ecosystems and causing irreparable damages to nature. For many decades, development involved society and technology advance over new areas unpopulated by humans.
Some of the principal human activities responsible for biodiversity loss are
the uncontrolled use of unrenewable resources, overexploitation of renewable resources; land destruction for the mining industry, farming and cattle industry, buildings, and other infrastructures; the unplanned advance of cities, and opening of new roads to connect those cities.All of them involving
deforestation and fragmentation of natural landscapes; water, air, and soil pollution, species loss, and reduction of biodiversity.With globalization, transport around the world became normal. And when traveling around the world, new species are intentionally or unintentionally transported too. When these species, of animal or vegetable origin, get established in a new area, they overgrow to the point of turning invasive.
Invasive species are uncontrollable and cause severe damage in native endemic species by competing for resources. The whole ecosystem structure changes.
But there are some background glitches in the system that are the principal responsible for all the mentioned activities. Some important aspects are lacking
The respect for nature, People´s education at different levels to care and protect wildlife, Interest in keeping ancestral knowledge, Planning and previous environmental impact studies, Policies to control human activities, Caring involved government.If, as a society, we lack these aspects, the possibilities of changing our impact on nature are far away.
The image below shows a type of mutation called a(n) _________.
Answer:
deletion
Explanation:
There are multiple lines of evidence that provide support for common ancestry and evolution. Write 3-4 paragraphs describing at least three of them in detail. Provide at least one example for each line of evidence.
(I need the full three to four paragraphs ASAP please please please)
Answer: Determining a substance's physical or chemical identity. What are the two main requirements for identification? The adoption of testing procedures that give characteristic results for specific standard materials and the number and type of tests needed to identify a substance to exclude all other substances.
Describe the steps a plant would take to move sugars from a source to a sink.
describe sporangium fungi and club
Answer:
A sporangium (pl., sporangia) (modern Latin, from Greek σπόρος (sporos) 'spore' + ἀγγεῖον (angeion) 'vessel') is an enclosure in which spores are formed. It can be composed of a single cell or can be multicellular. All plants, fungi, and many other lineages form sporangia at some point in their life cycle.
Explanation:
5. A pride of lions hunting a dazzle of zebras.
Answer:
lions hunting zebras is a part of nature
Explanation:
In what phase does the water molecules have greater freedom of movement.
How does latitude affect a climate zone? (1 point) Group of answer choices Climate zones at low latitudes are hotter because they receive more direct sunlight. Climate zones at high latitudes are cooler because they are closer to the equator. Climate zones at high latitudes receive a lot of precipitation because they are farther from the equator. Climate zones at low latitudes receive little precipitation because they are closer to the ocean.
Climate zones at low latitudes are hotter because they receive more direct sunlight. Therefore, the correct option is option A.
Due to the Earth's tilt and the orbital geometry of its planet, climate zones at low latitudes are hotter because they receive more direct sunlight. The tilt of the Earth's axis in relation to its orbit around the sun is roughly 23.5 degrees. At various points on the Earth's surface during the year, this tilt produces fluctuations in the amount of sunlight that is received. The angle at which sunlight strikes the surface is almost perpendicular in low latitudes, which are nearer the equator. As a result, there is more direct and concentrated heat since the sunshine is concentrated over a smaller area.
Therefore, the correct option is option A.
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Which of these is a result of crossing over?
a.) Decrease in the number of chromosomes
b.) Exchange of proteins
c.) Exchange of genetic material
d.) Increase in the number of chromosomes
The result of crossing over is the exchange of genetic material that is present in Option C because this only happens in meiosis during the prophase and results in different gametes.
What is the importance of crossing over?"Crossing over" is a process that occurs during meiosis of cell division in sexually reproducing organisms that produces gametes such as sperm and eggs. During crossing over, the genetic material in the parent cells' chromosomes is exchanged, resulting in new combinations of genes in the gametes, and the importance of crossing over is that it creates genetic diversity within a population.
Hence, the result of crossing over is the exchange of genetic material that is present in Option C because this only happens in meiosis during the prophase and results in different gametes.
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PLEASE HELP !!
ILL GIVE BRAINLIEST
NO LINKS OR FILES.
Answer:
The answer is C.
Down syndrome in humans is due to ________ of the 21 st chromosome.
Answer:
Down syndrome in humans is due to ADDITIONAL, PARTIAL OR FULL COPY of the 21 st chromosome.
Explanation:
Down syndrome is a genetic disorder in which an individual has a total of 47 chromosomes instead of 46 that is, 23 pairs of chromosomes which is found in normal individuals. This occurs as a result of the presence of additional, partial or full copy of chromosome 21. There are generic variations that occurs in chromosome 21 leading to down syndrome, these include:
-->Trisomy 21 : the individual has three copies of chromosome 21 instead of two copies due to abnormal cell division that occurred during development of sperm or egg.
--> Mosaic Down syndrome: the individual has some cells with an extra copy of chromosome 21 and it's caused by abnormal cell division after fertilization.
--> Translocation down syndrome: This type of down syndrome occurs when chromosome 21 gets attached to another chromosome which occurs during or after conception.
Generally the symptoms due to the presence of this extra genetic material includes:
--> short heights
--> poor muscle development
--> short neck
--> short fingers with small hands and feet
--> increased risk to development of dementia
--> greater tendency to develop obesity
Puzzle #4 four digit code
Answer:
Im doing this but I was honestly looking for a cheat sheet lol
A population of capybaras contains 104 individuals. Studying them you discover that they have two types of alleles for a certain gene. The frequency of the recessive allele (c) is 0.3 and we assume that this is an ideal population with simple dominance. a. Calculate the frequency of the dominant allele, C. b. Calculate the genotype frequencies in the next generation (F1) c. Calculate the phenotype frequencies of F1 d. Calculate the heterozygosity (H) e. Calculate the number of heterozygous individuals in the wild population
Answer:
a.
f(C) = p = 0.7b.
F(CC) = p² = 0.49 F(cc) = q² = 0.09 F(Cc) = 2pq = 0.42c.
F(C-) = 0.91F(cc) = 0.09d.
F(Cc) = 2pq = 0.42e.
43.68 individuals CcExplanation:
Due to technical problems, you will find the complete explanation in the attached files
The genetic code is:
*Choose all that apply
Group of answer choices
redundant, with more than one codon for some amino acids.
uambiguous in that any codon for one amino acid does not code for any other amino acid.
nearly universal—the genetic code is shared by organisms from the simplest bacteria to the most complex plants and animals
without punctuation in that codons are adjacent to each other with no gaps in between
redundant, with more than one codon for some amino acids.
nearly universal—the genetic code is shared by organisms from the simplest bacteria to the most complex plants and animals
without punctuation in that codons are adjacent to each other with no gaps in between
The genetic code is redundant, with more than one codon for some amino acids, and nearly universal—the genetic code is shared by organisms from the simplest bacteria to the most complex plants and animals.
The genetic code is a set of rules that dictates how the sequence of nucleotides in DNA and RNA is translated into the sequence of amino acids in proteins. One of the essential features of the genetic code is its redundancy. There are 20 different amino acids used in protein synthesis, but there are 64 possible codons (combinations of three nucleotides) in the genetic code.
The genetic code is nearly universal. This means that the same codons code for the same amino acids across different organisms, from bacteria to plants to animals. This universality of the genetic code is a strong indication of the common ancestry of all living organisms on Earth. Despite the vast diversity of life, the fundamental genetic code remains highly conserved and shared among all organisms.
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Explain how gene therapy is able to solve genetic diseases. Please take
your time explaining in detail a few of the the tools that are currently used
for this treatment. (5 marks)
Answer:
Gene therapy is used to correct defective genes in order to cure a disease or help your body better fight disease. Researchers are investigating several ways to do this, including: Replacing mutated genes. Some cells become diseased because certain genes work incorrectly or no longer work at all
13. Which food or drink item is a homogeneous mixture?
O A. A bowl of cereal with milk
OB. A cup of black coffee
OC. A handful of trail mix
O D. A tossed salad
Answer:
I think the ans is B a cup of black coffee
Answer:
A cup of black coffee
Explanation: You have to stir the ingredients in until they dissolve
extrusive rocks have larger grains than intrusive rocks.true or false and why
False because extrusive rocks have fine-grained texture due to the rapid cooling of magna above the earth surface. On the other hand extrusive rocks have course grained texture due to slow cooling of magna beneath the Earth's surface
Which of these islands would likely have the most species diversity.
A small island in the middle of the ocean
O A large island near the mainland
Answer:
A large island near the mainland
Explanation:
A large island has a greater number of species, a greater interaction between them and a greater number of natural elements. All of this is capable of promoting biological specialization on a large scale, allowing new species to emerge more quickly than on a small island. Although a small island may also have great biodiversity, that island has fewer factors that promote the creation of new species, in addition to having fewer species interacting and creating new species.
Streptococcus pneumoniae causes all of the following EXCEPT ________. Group of answer choices meningitis. lobar pneumonia. bronchopneumonia. necrotizing fasciitis. bacteremia.
Answer:
The correct answer is ''necrotizing fasciitis.''
Explanation:
Streptococcus pneumoniae belongs to the Streptococcaceae family. It is a Gram positive bacterium, normally facultative anaerobic, catalase negative, immobile, with an oval shape, surrounded by a capsule (does not present Lancefield antigens) and is usually grouped into chains of two (diplococcus) or more bacteria. It can give rise to a wide range of manifestations, among them, the most frequent but the least serious are upper respiratory tract infections, such as: otitis media, sinusitis, etc; while the less frequent but the most serious are: pneumococcal pneumonia, invasive pneumococcal disease, meningitis and septicemia. Necrotizing fasciitis is a rapidly progressive infection that affects the skin, subcutaneous cellular tissue, superficial and deep fascia, causing tissue necrosis and severe systemic toxicity, which, if not treated in a timely manner, is invariably fatal. The most common germs in immunocompetent people are Streptococcus pyogenes and Staphylococcus aureus. In patients with a defined gateway in the skin, the incidence of S. aureus is high. Deep necrotizing processes can be mono- or polymicrobial. In monomicrobial processes, pathogenesis is largely mediated by toxins (FN by S. pyogenes, FN by S. aureus, clostridial myonecrosis). In polymicrobial processes there is a synergism between aerobic and anaerobic germs. The most common aerobes are Enterobacteriaceae, Streptococcus group A, and S. aureus. The predominant anaerobes are Peptostreptococcus spp, Bacteroides fragilis group, Prevotella sp, Porphyromonas spp and Clostridium sp. Streptococcus pneumoniae belongs to the Streptococcaceae family.
Which is a characteristic of arthropod?
A. moist skin
B. feathers
C. scales
D. joint-legged
Answer:
D joint legged like butterfly
Answer:
D.joint legged
Explanation:
D.joint legged
PLWASS HURRY!!! Your teacher gives you a task in science class. You must decide which of the five samples you are given are alive or were once alive.
One specimen is a crusty gray-green object. What is the BEST clue you could use to decide: living thing or not a living thing?
A)
Does it move?
B)
Does it have DNA?
Is it made of cells?
D)
Can it make its own food?
Answer:
dose it move
Explanation:
Explain the differences between Bacteria and Decomposers?
Answer: Decomposers like bacteria and fungi don't eat their food, they decompose it externally. Also, decomposers consume nutrients on a molecular level while detritivores eat large amount of decaying material and excrete nutrients. ... In addition to fungi, bacteria are also decomposer organisms. brainliest
Explanation:
A diploid cell (2N) in G1 phase of the cell cycle has how many alleles of each gene?
Please help
Answer:
46 chromosomes
Explanation:
I. G1 phase (Gap 1) - Cellular contents excluding the chromosomes, are duplicated. II. S phase (DNA Synthesis) - Each of the 46 chromosomes is duplicated by the cell.
1. Which of the following occurrence can be explain
by convection?
A. How a fire place can heat up people in a room
B. How the heat of the sun reaches earth
C. Why a handle of a metal spoon also gets hot when
placed on a steamy soup
D. Why chilly air always remains near the floor
2. Which of the following is NOT true about heat?
A. It is a form of energy
B. It transfers from one object to another.
C. It is caused by a temperature difference between
two objects
D. It determines the hotness or coldness of an object
3. Which of the following describes heat?
A. Energy stored in all objects regardless of
temperature
B. Energy that causes objects to have temperature.
C. Energy transferred due to difference in materials
D. Energy transferred due to temperature differences
4. An unknown object is placed in contact with a heat
source. It was observed that the object did not increase
its temperature Which of the following explains why?
A. The object is heated too much.
B. The object is heated via radiation.
C. The object is a thermal insulator,
D. The object is a thermal conductor.
Answer:
1. C. Why a handle of a metal spoon also gets hot when placed on a steamy soup.
2. D. It determines the hotness or coldness of an object.
3. D. Energy transferred due to temperature differences.
4. C. The object is a thermal insulator.
Explanation:
Convection is the transfer of heat energy through the movement of a liquid or gas from one place to another. If we place a metal object at a distance from the hot body so the fumes that comes out increase the temperature of the metal that is present on the hot body. Temperature determines the hotness or coldness of an object not the heat. The heat energy transferred from one body to another due to difference in temperature of both objects. Insulator are those materials which no ability to transfer heat energy from one place to another.
Why do tree's cells need to make more DNA?
It’s one of the big mysteries of cell biology. Why do mitochondria—the oval-shaped structures that power our cells—have their own DNA, and why have they kept it when the cell itself has plenty of its own genetic material? A new study may have found an answer.
It’s one of the big mysteries of cell biology. Why do mitochondria—the oval-shaped structures that power our cells—have their own DNA, and why have they kept it when the cell itself has plenty of its own genetic material? A new study may have found an answer.Scientists think that mitochondria were once independent single-celled organisms until, more than a billion years ago, they were swallowed by larger cells. Instead of being digested, they settled down and developed a mutually beneficial relationship developed
It’s one of the big mysteries of cell biology. Why do mitochondria—the oval-shaped structures that power our cells—have their own DNA, and why have they kept it when the cell itself has plenty of its own genetic material? A new study may have found an answer.Scientists think that mitochondria were once independent single-celled organisms until, more than a billion years ago, they were swallowed by larger cells. Instead of being digested, they settled down and developed a mutually beneficial relationship developed
I
An idea based on observations with no experimental evidence is a:
a.
Hypothesis
c.
Theory
b.
Model
d.
Law
Please select the best answer from the choices provided
A
B
C
D
Answer:
a
Explanation:
Identify the name of each of the pathways [A, B, C]
Answer:
C [Krebs cycle]
B [glycolysis]
2. When a population stops growing because it has reached the maximum number that the environment can support, the population has reached
A a ceiling
•B. carrying capacity
C. a critical point
D. population density
Please give an awesome explanation.Ky answer if you're very good at Science/Biology.Please don't put a link to a website.
Explain how competition for food can cause natural selection.
Answer:
Competition for food happens when there is a limited amount of food resources available. The members of a species that eat that food who are best adapted to access the food are more likely to reproduce and pass on their genes to the next generation.
For example, we have a bird feeder with a narrow opening for food. The small-headed birds can reach the food, the bigger-headed birds cannot. If this was the only food source for this area, then over time, there would be more smaller-headed birds than large-headed birds, due to the competition for food and success/lack of success.
What is the function of the digestive system?
A. Removal of liquid waste
B. Maintain body temperature and hormone levels
C. Delivers food to your brain
D. Changes food into minerals and nutrients that are absorbed into
bloodstream
Sheila, 32 years old, has been referred to a registered dietitian following her 6-week postpartum check-up following her third pregnancy, as she has concerns about her goals of weight loss and still being able to meet her daughter’s nutritional needs through breastfeeding. This pregnancy was complicated by gestational diabetes, as was her second pregnancy. She gained 37 lbs and states she understands the need to lose her pregnancy weight to reduce the risk of developing type 2 diabetes; she wasn't successful with losing the weight from her second pregnancy. Her daughter was 9 pounds 11 ounces at birth and has been gaining weight appropriately. Sheila breastfed her first two children until they were approximately 5 months old. Her current weight is 223 lbs and her height is 5'5". She reports she hasn't started exercising yet, but she was medically cleared to do so by her physician. Sheila's 24-hour recall shows an estimated calorie intake of 2700 kcal with limited fruits and vegetables, one cup of milk, and portions of high-fat and sugary foods. She has been maintaining her weight with her current calorie intake.
1. What is an estimated daily calorie intake that would allow Sheila to lose weight? (Explain/show how you came up with your number.
2. What daily calorie intake would be considered too low to support breast milk production? (Explain/show how you came up with your number.
3. a) Are there any vitamins and minerals Sheila might have inadequate intakes of based on her 24-hour recall? (Explain why the nutrients you listed are likely to be short in her diet.
b) How would you recommend she adjust her food intake to meet her needs for these nutrients? (Give specific examples of foods that will increase her intake of the nutrients you listed in the first part of the question.
4. What other recommendations do you have for Sheila to assist with her weight loss goals?
5. How will Sheila know whether her daughter is receiving adequate nutrition while she focuses on her goal of weight loss while breastfeeding?
Answer:
uhhh what im i supposed to do?
Explanation: