Answer red s pic no:
Explanation:
Even though the idea of recycling materials and using them in other ways seems like a good idea, why is the idea of using recycled tires at playgrounds a concern for some scientists?
edge2021
Answer:
The idea of using recycle tires at playgrounds is a concern for some scientists because they contain carcinogenic substances.
Explanation:
Recycle tires are in playgrounds as rubber mulch. This one is on the playground's floor to cushion the impact of any falls that kids may have while playing. The problem with this product is that, as they are old tires cut into little pieces, they still have the tires' toxins such as arsenic, benzene, cadmium, mercury, etc. Exposure to these toxins can cause cancer. This is why some scientists are concerned with this material in areas where kids are exposed to it since they are more vulnerable to carcinogens than adults.
pls help i really need it
Answer:
the awnser is b chickens live up to 18 months with there head cut off
Explanation:
What occurs when Two species have the need for the same resource
Answer:
Competition
Explanation:
since they need the same resource they will have to fight for it.
good luck on your mid-term!! i know it's quite stressful. but you can do it :)
Answer:
c
Explanation:
In humans, dimples (D) are dominant over no dimples (d). Curly hair (A) is dominant over
straight hair (a). Paul, who is heterozygous for dimples and curly hair, marries Jane, who
has curly hair but does not have dimples. Jane's mother had straight hair, but her father had
curly hair. Paul and Jane had a child named Peter, who had curly hair but did not have
dimples.
Answer:
1. ddaa
2. DdAa
3. One from each parent
4. False
5. 0.25
6. 0.25
7. 0.25
8. 0.5
Explanation:
The remaining part of the question is
1. What is Jane's genotype?
2. What is Paul’s genotype?
3. Where did Jane get her gene for curly hair? From her mother or father?
4. True or False: Jane's mother was heterozygous for curly hair?
5. What fraction of Paul and Jane's children should have curly hair and dimples?
6. What fraction of their children would have straight hair and no dimples?
7. What fraction should have dimples but not curly hair?
8. What is the probability of getting any offspring with dimples
Solution
1. Genotype of Jane's mother -ddaa
2. Genotype of Paul (heterozygous for dimples and curly hair) – DdAa
3. One “a” gene from mother (whose genotype for hair was aa) and second “a”gene from father (whose genotype was Aa)
4. False. She was having straight hair
5. Offspring of Paul and Jane
DdAa (4), Ddaa (4), ddAa(4) and ddaa (4)
4 out of 16 offspring will have curly hair and dimples = 0.25
6. ddaa, 4/16 = 0.25
7. Ddaa , 4/16 = 0.25
8. Ddaa, DdAa, 8/16 = 0.5
How .....................................................................................................................
Answer:
how? what do you mean
Explanation:
how what :)gl
Answer:
um how what?
Explanation:
Tortoiseshell cats have an extra sex chromosome which causes their mottled fur colors; the different colors are a result of different X chromosomes being activated in random cells. This is called:
a. x-inactivation
b. x-expression
c. x-activation (not this, I know because I submitted and it's not this)
d. y-inactivation
Answer:
A. X-inactivation
A freight train weighing 12,000 tons is traveling 65km/hr. How far will it travel in 18 hours?
Answer:
1170km
65km per hour for 18 hours is just 65*18
the 12k tons bit is just there as a distractor
Explanation:
The process by which leukocytes squeeze through adjacent cells in a blood vessel
wall is called?
a) leukocytosis
b) emigration
c) cytoplasmic extending
d) positive chemotaxis
Answer:
The process by which leukocytes squeeze through adjacent cells in a blood vessel wall is called emigration
The answer is B
Leukocytes are the white blood cells responsible for protection from infections. The process by which leukocytes squeeze through adjacent cells in blood vessels is called emigration. Thus, the correct option is B.
What are leukocytes?Leukocytes are also known as white blood cells. These cells are responsible for the defense mechanism of the body. Leukocytes protect the body from infections as these are part of the body's immune system.
Leukocytes migration is essential for the ability of WBCs to react to the inflammatory stimuli at various locations within the body. These cells cannot swim due to lack of locomotory organelles. So, for the movement these cells use emigration. These process helps them to move to the site of infection to kill the pathogen and reduce the infection.
Therefore, the correct option is B.
Learn more about Leukocytes here:
https://brainly.com/question/12857838
#SPJ2
HELPP IMA GIVE 15 POINTS
How can we test for density?
Answer:
Using a vernier caliper or ruler, measure the length, depth and width of the object in centimeters. Multiply these three measurements to find the volume in cubic centimeters. Divide the object's mass by its volume to determine its density. Density is expressed in grams per cubic centimeter or grams per milliliter.
Explanation:
I hope this helps! :)
When is genetic drift a major factor in evolution?
O A. When there is low gene flow
O B. When there is high selective pressure
O C. When there is sexual selection
O D. When there is female choice
Answer:look at pic
Explanation:
When there is high selective pressure is the major factor in evolution.
What is Genetic drift?Genetic drift is the arbitrary change in the population's frequency of a gene variant that already exists. Gene variations may totally vanish due to genetic drift, which would limit genetic diversity. Moreover, it can make previously uncommon alleles far more common and even fixed.
Genetic drift is an evolutionary process in which the frequency of a given gene allele varies randomly across a population.
The impacts of genetic drift can be severe, often causing traits to become excessively common or to vanish from a community, even though it predominantly affects small, isolated populations.
Therefore, When there is high selective pressure is the major factor in evolution.
To learn more about Genetic drift, refer to the link:
https://brainly.com/question/12985618
#SPJ5
1.Organisms without a distinct nucleus
2 .Structures that display characteristics of living organisms only
within living cells
3. The close association between two organisms where one or both
benefit muclism
4. Disease caused by a virus that leads to a gradual destruction of th
mmune system
5. Process by which bacteria break organic matter into simple
utrients which are then returned to the so
A term used to describe organisms that cause diseases e.g. bacteria
The temperature at which air becomes saturated with water vapor is called the _____.
the dew point
is the point were air is saturated with water vapour, which is the gaseous state of water.
hope it's perfect for you.
what is psychological aspect of ageing
Answer:
Explanation: Psychological aging focuses on sensory processes, perception, coordination, mental capacity, human development, personality, and coping ability as they are affected by aging. In most societies, older people are generally viewed as a group of with common characteristics and needs. Older age is usually viewed as a state, a stage or an event.
Ageing - Physical and Psychological Changes. Pathological Ageing
The process of aging has been around as long as life itself. All living organisms pass through three broad stages from conception to death, which are maturation, maturity and aging. Aging affects everyone because nearly everyone has the potential to grow old and all the societies in which we live have older members (Macdonald, 1997). Gerontology is the use of reason to understand aging. The term was used to refer to the scientific study of aging, but nowadays it includes the study of aging using views from other disciplines such as humanities, social policy and human services. To correctly understand aging, knowledge from a variety of sources is needed, therefore gerontology includes the results of research on aging from all academic disciplines and fields of professional practice. There are four interrelated aspects to the study of aging, which are, physical, psychological, social psychological and social. The study of physical aging examines the causes and consequences of the body’s declining capacity to renew itself and the means for preventing, treating, or compensating for illness or disability caused or related by physical aging (Atchley, 1997). Psychological aging focuses on sensory processes, perception, coordination, mental capacity, human development, personality, and coping ability as they are affected by aging.
In most societies, older people are generally viewed as a group of with common characteristics and needs. Older age is usually viewed as a state, a stage or an event. In reality, older people are not a homogenous group, but rather highly diverse individuals. The factor that is common to all older people is the accumulation of more numerous life experiences over a greater period of time than those of younger people (Bowling & Dieppe, 2005). Aging is defined as the process of becoming older, a process that is genetically determined and environmentally modulated. Aging is something that everyone will have to experience. Everyone will have to grow old. Normal ageing brings about changes in the body and mind, therefore both physical and psychological. These symptoms are all part of ageing, but also some might not be due to normal aging but rather due to diseases, which can be treated or remedied. Therefore, it is important to learn about normal ageing in order to be able to distinguish between disease and normal ageing so to be in a position to seek proper and early treatment for the disease.
Changes related to normal Ageing
Vision
Vision is usually impaired due to ageing. These can be due to presbyopia. There can also be overflow of tears due to blockage of drainage ducts and well as old people may have dry eyes (Chopdar et al., 2003). In order to minimise such problems it is important to check for presbyopia and wear suitable lens. Also it is important to seek a doctor’s advice on the need of any eye drops, only against doctor’s prescription.
Hearing
Due to ageing hearing may be impaired. Hearing loss is common due to old age (Bates, 1993). In order to be able to adjust due to this condition lifestyle modifications may help to overcome this situation. This may include the consideration of hearing aids. Also the installation of loudspeakers to devices such as door bells and telephone units.
Sensation
Sensation also if affected due to normal ageing. Old people have a blunted touch sensation, especially near the tips of the fingers and toes. Also there is a blunted sensation of temperature (Macdonald, 1997). Therefore, in order to counter act these changes, it is important for old people to wear well fitted shoes and take good care of their feet. If any wounds are present these should be inspected regularly. Also it is important to wear suitable clothes according to the day’s weather conditions.
What is the main source of raw material for the production of plastics?
Answer:
Crude oil is the main source
Explanation:
hope it helps
Pls mark as brainlist
A man and a woman have recently married , unfortunately they didn't have any children yet. What do you think are the reasons for delayed pregnancy ?
Answer and I will give you brainiliest
Answer:
Late ovulation
explanation
it can delay pregnancy, but that doesn’t mean it won’t happen. It’s entirely possible to conceive when you ovulate later in the cycle; the trick is to be as in tune with your body as possible. By knowing exactly what to look out for, you'll soon be able to tell when you are eventually ovulating.
"Several common reasons for a late period include stress, low body weight, obesity, different hormonal syndromes, birth control, and chronic diseases,"
Light reactions occur inside of the thylakiod membranes and they produce oxygen, ATP, and NADP
True
False
A blue-eyed myopic woman from a marriage with a brown-eyed man with normal vision gave birth to a brown-
eyed myopic girl and a blue-eyed boy with normal vision. The gene for myopia (B) is dominant over the gene for
normal vision (c), and the gene for brown eyes (C) is dominant over the gene for blue eyes (c). What is the
probability of the birth in this family of a brown-eyed child with normal vision?
Выберите один ответ:
a. 50%
O b. 75%
c. 0%
O d. 25%
Answer:
option b 75%
Explanation:
this is the answer I guess
Answer:
The answer is option B 75%
Explanation:
The probability of birth of a brown-eyed child with normal vision is 75%
thank you.
Can someone plz help me
I need help with this!
bt bb bz bz bs bs db h bj bg
Explanation:
hajans
Which statement best describes the relationship between cells, DNA, and proteins? * 1 point A) Cells contain DNA that controls the production of proteins. B) DNA is composed of proteins that carry coded information for how cells function. C) Proteins are used to produce cells that link amino acids together into DNA. D) Cells are linked together by proteins to make different kinds of DNA molecules
Answer:
It's going to be A
Explanation:
DNA has instruction in it on how to do protein synthesis.
is the human population growth also a factor. for. causing deforestation? justify your answer giving reason
Answer:
Population growth, combined with other direct factors such as poverty, corruption, and weak property rights, contributes to forest loss and severe environmental degradation. Demand for forest and agricultural products to feed growing rural and urban populations will continue to put pressure on forests.
Explanation:
I had corona awhile ago and now most things I eat and smell are not good?
Answer:
sorry for what u went through and that's sucks lol
What are histones, and how are they arranged in nucleosomes? Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Not all terms will be used.
a. lysine and arginine
b. histidine
c. five
d. four
e. eight
f. glycine and proline
g. two
h. one
Histones include_______ main classes of relatively small basic proteins containing relatively large amounts of_______ . Nucleosomes are made of________ each of_______ types of histones.
Answer:
1) c. five
2) a. lysine and arginine
3) g. two
4) d. four
Explanation:
A nucleotide can be defined as an organic molecule which forms the building block of nucleic acid such as deoxyribonucleic acid (DNA) and ribonucleic acid (RNA).
Basically, nucleotide comprises of the following parts;
1. Nitrogenous base: this includes adenine (A), thymine (T), guanine (G), and cytosine (C) which are mainly found in the DNA while adenine (A), guanine (G), uracil (U) and cytosine (C) are found in the RNA.
2. A phosphate group.
3. A penrose sugar: it is either deoxyribose in DNA or ribose in RNA.
The two parts or chemical components of a nucleotide which do not change throughout the structure of DNA are;
I. Five-Carbon Sugar also known as deoxyribose and it has hydrogen on its second carbon.
II. Phosphate: this is the structural backbone that provides support to DNA.
Histones are a group of highly basic proteins that are mainly associated with deoxyribonucleic acid (DNA) in the nucleus of a living organism and then condense it to chromatin.
Histones include five main classes of relatively small basic proteins containing relatively large amounts of lysine and arginine. Nucleosomes are made of two each of four types of histones.
If you wanted to study the effects of soil moisture and light intensity on the growth of soybeans and required a high ability to regulate these independent variables, what type of experiment would you choose?A. Laboratory experiment.
B. Field experiment.
C. Natural experiment.
D. Reference experiment.
Answer:
A
Explanation:
The correct answer would laboratory experiment.
In the laboratory, variables can be controlled as much as possible using relevant equipment unlike in natural habitats or field experiments. For example, the amount of water that each plant would receive can be measured using measuring cylinders and the time they are applied can also be fixed.
Field and natural experiments require that experimental procedures are carried out in the field under natural conditions. Consequently, variables such as the amount of moisture that gets into the soil or the amount of light a plant will receive will be extremely difficult to control. Precipitation time and the duration of light can also not be controlled.
The correct option is, therefore, A.
List two adaptations of plant life in the tropical rain forest.
Answer:
Having their roots in the ground and climbing high into the tree canopy to reach available sunlight.
Lianas start life in the rainforest canopy and send roots down to the ground.
Explanation:
What would happen to a resting skeletal muscle if the
sarcolemma suddenly became very permeable to calcium
ions?
Answer:
akoto sacaculocome cac
6. When an action potential reaches an axon's terminal it will
a. Trigger the release of neurotransmitters into the cleft
b. Cause voltage gated ion channels to open on the postsynaptic cell
c. Cause ligand-gated ion channels to open on the presynaptic neuron
Answer:
Cause voltage gated ion channels to open on the postsynaptic cell
Explanation:
Brainliest
4 pic 1 word
what is the word?
Answer:
tree
Explanation:
Answer:
Life ?
Explanation:
The bottom right is a weird looking person but yea. Ain't no way that bottom right thingy is a tree !? I thought it was a human with wings
please do this. It is 100 points and im giving brainliest.
Answer:
pls see on book all answer see given
The three main domain was identified by
Answer:
below
Explanation: Studies by Benjamin Bloom (on cognitive domain), David Krathwohl (affective domain) and Anita Harrow (Psychomotor domain) have been encompassed into the three domains of learning (Sousa, 2016)
The use of DNA in the process of classifying organisms is known as
Answer:
The field of genetics involves the study of genes, segments of DNA that code for specific traits, behaviors, or other characteristics of organisms. ... By studying genetics and DNA, we can get the best idea of how species are related to each other, and therefore how to classify them.
The field of genetics involves the use of DNA in the process of classifying organisms.
What is genetics?Genetics is the scientific study of genes and heredity and how certain characteristics are handed down from parents to offspring as a response to changes in DNA sequence.
A gene is a segment of DNA that contains instructions for constructing one or more molecules that aid in the functioning of the body.
Thus, the field of genetics involves the use of DNA in the process of classifying organisms.
For more details regarding genetics, visit:
https://brainly.com/question/12985618
#SPJ2